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2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math


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11756400 No.11756400 [Reply] [Original]

Look at this rocket
previous: >>11752072

>> No.11756407
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11756407

first for Boing! absolutely BTFO

>> No.11756409
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11756409

>>11756407
I want Boeing to get their shit together.
Once they do the competition would mean great things for space.

>> No.11756420 [DELETED] 
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11756420

>>11756407

>> No.11756422

>>11756400
looters stole the rocket too. cant have shit in florida

>> No.11756424
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11756424

>>11756420
ftfy

>> No.11756429

>>11756409
Boeing is a company owned and operated by program managers who are looking forward to going forward to pursue the initiatives which conduct business operations.
SpaceX is a company owned and operated by engineers.
Until this status quo changes, SpaceX will continue its lead and Boing will get more and more behind

>> No.11756431

>>11756409
No i want as many contacts as possible to be awarded to spacex. Boeing is motivated by money, spacex is motivated by ideology. Once the road to mars is established then i won't care but until then i want NASA to pay for Starship development.

>> No.11756439
File: 209 KB, 1800x1271, KellyJohnsonandGaryPowers.jpg [View same] [iqdb] [saucenao] [google]
11756439

>>11756429
>Boeing is a company owned and operated by program managers who are looking forward to going forward to pursue the initiatives which conduct business operations.
They're gonna have to restructure themselves.
Especially after the fiascos they're currently embroiled in.
>>11756431
Fuck SpaceX.
LockheedMartin > Space X >>>>>>>>> Boeing

>> No.11756450

>>11756429
SpaceX is owned by a businessman with a fetish for engineers, and operated by some very talented people

>> No.11756459

>>11756439
>Boeing restructuring
Is meaningless. The rot starts at the top, there's no fix for that.
>Lockheed > SpaceX
Venturestar was never going to work

>> No.11756463 [DELETED] 

>>11756439
>LockheedMartin > Space X
is this a fucking joke?

>> No.11756465
File: 3.25 MB, 2880x1522, SR71_Cockpit.jpg [View same] [iqdb] [saucenao] [google]
11756465

>>11756459
>Venturestar was never going to work
WE DIDN'T EVEN TRY!
IT FUCKING COULD'VE.
>>11756463
No, why would it be?
They do good work!

>> No.11756469

>>11756450
Even if that were true, that would be a pretty good way to run a company. Still, you can’t deny Elon is the chief engineer and has time and time again demonstrated his involvement in the day to day design of all things SpaceX

>> No.11756473

>>11756469
>you can't deny that Elon is the chief engineer
that is a title that he has given himself, yeah
it's very much a better way to run a company than either Blue Origin's "I have deep pocketbooks and make no other contributions" or Boeing's methods

>> No.11756480

>>11756473
More than just a title, there are numerous emails from him showing how hands-on he is with development but I’m not here to ride his dick I just wanted to point out that he is indeed involved with the engineering and to add as a side that frankly technocracy is probably the best way to run human hierarchies period

>> No.11756487 [DELETED] 

>>11756465
>WE DIDN'T EVEN TRY!
X-33 was the try, to prove the minimum technology advancements needed to make Venture Star work. X-33 was cancelled because it clearly WASN'T going to accomplish those advancements. VS was dead in the water.

>They do good work!
They DID good work. Who knows what they do now? Aerojet Rocketdyne did good work too, but they're bloated to shit and arthritic now just like Boeing.

>> No.11756581

>>11756487
>Who knows what they do now?
The F-22 is the the best fighter right now. It's not even close.
The Chinese stole state secrets and still can't make something that can compare.

They still do good work. They just play it safe. They're an incredibly cautious company.

>> No.11756644

>>11756581
F-22 was conceived in the 1980s.
F-35 was conceived in the 1990s.
Not good examples to be using for Lockheed's current performance.
Really, the government never should've allowed/encouraged the 1990s defence mergers.

>> No.11756649
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11756649

>>11756644
Forgot pic.

>> No.11756667
File: 432 KB, 1735x1403, YF-22_and_YF-23.jpg [View same] [iqdb] [saucenao] [google]
11756667

>>11756644
Development for military projects take decades.
The original RFP may be released twenty years before the first prototype is built.

Lockheed has done good work continuously. They have a good engineering culture.

>Really, the government never should've allowed/encouraged the 1990s defence mergers.
There was no choice. With the Cold War ending the majority of companies would've collapsed and wiped out huge job bases.
Although, as someone who grew up on Long Island - haven't been back in years, I'll always miss Grumman.

>> No.11756679

>>11756459
I keep seeing people shit on venture star. What was it’s ultimate demise? (From what I can gather, it was one of those things where it only worked on paper and couldn’t actually make it to orbit?)

>> No.11756684

>>11756667
As long as Lockheed and others keep delivering that's fine, but China is closing the gap quickly.

>> No.11756688

>>11756679
Maybe it could've really worked.
But it was one of the money sink problems where you fix one engineering problem and you end up with another. It would have cost billions.

>> No.11756691
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11756691

>>11756684
>but China is closing the gap quickly.
ahahahahahahaha

>> No.11756696

>>11756649
Just wait until they all start merging together into one megacorp.

>> No.11756724

>>11756691
You realize this is a prank made by US citizens, right? It's not even remotely relevant.

>> No.11756734

>>11756724
...y-yeah, anon. it's joke.
>made by US citizens,
Made by an intern at the NTSB, actually.

>> No.11756798

>>11756409
Boing! is fucking dead, anon. It's received a fatal dose of radiation and is in the walking ghost phase.

>> No.11756830

Can you synthesize kerosene using raw materials from, say, rocks? As far as I know, if the atoms are there, you can do it

>> No.11756833

>>11756830
hydrogen is the hardest to find (it's in water)
carbon is the next hardest

>> No.11756891
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11756891

>>11756644
A least Lockheed can make plaines, that’s more then what Boing can do.

>> No.11756911
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11756911

The spear of man that pierced the heavens and landed men on the moon. A gleaming tower proclaiming the superiority of freedom. The booster that launched the only missions to make it out of the solar system in human history thus far. If anything is going to be a holy artifact from the industrial age it's the Saturn V.

>> No.11756914 [DELETED] 

I guess what I want to ask is this: how can /sci/, /sfg/, and the online space flight community in general be an ally to and improve our spaces for it’s racialized members, especially African-Americans?

>> No.11756917

>>11756911
I love this big exploding penis

>> No.11756922
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11756922

>>11756914
step 1: don't be an asshole
step 2: fuck off
look at this cute astronaut

>> No.11756924
File: 2.94 MB, 376x270, SaturnV_launch.webm [View same] [iqdb] [saucenao] [google]
11756924

>>11756911
Based, but the Saturn V never launched anything beyond the Solar system.

>>11756914
No.

>> No.11756934

>>11756922
I'm really glad American astronauts are all nice people (even if some get a little crazy with age). At least it's a profession kids can still aspire to be.

>> No.11756951

>>11756696
it would be hell on earth

But image one megacorp responsible for all aviation/space systems in the entire western world.

>> No.11756970

>>11756951
Centrally planned economy, here we go

>> No.11756988

>looming threat of authoritarian communists gaining an upper hand in space
>rapid technological developments and advancements in spaceflight
>racial tensions and social unrest at the highest in years

Dear God we really are in the 60s again

>> No.11756993
File: 383 KB, 2550x4200, 4ASS mass driver.png [View same] [iqdb] [saucenao] [google]
11756993

How big a mass driver on the surface of Mars would you need to accelerate a 50mt payload to Mars escape velocity? 100km with superconducting magnets? 300km without?

>> No.11756995

>>11756988
>Dear God we really are in the 60s again
it's crazy how much I feel like I've read about current events in history books

>> No.11756996
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11756996

>>11756988
It's a good time to be alive

>> No.11757019

>>11756914
Don’t do crimes and don’t kill people.

>> No.11757022

>>11757019
Unless they’re criminals they should die

>> No.11757026

>>11756988
>China gaining an upper hand in space

Yeah no not really a possibility

>> No.11757030
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11757030

>>11756995
>>11756988
does this mean we can go bomb communists again

>> No.11757033

>>11757030
Maybe. Cuba, Nicaragua, and Venezuela are about due.

>> No.11757052
File: 373 KB, 796x600, orion battleship2.png [View same] [iqdb] [saucenao] [google]
11757052

Cancel SLS. Build Orion battleships.

>> No.11757053

>>11757052
Couldn’t you just kill people by doing a flyby>

>> No.11757056

>>11757053
Land on Beijing.

>> No.11757101 [DELETED] 

>>11756914
>African-Americans lacking access to education and economic opportunity means less engineers and scientists, but more welfare cases
>this means that American spaceflight has to make do with less manpower than it otherwise could have while competing for a smaller budget than it might otherwise be able to justify
I'm mad about inequality.

>> No.11757112 [DELETED] 

>>11757101
they dont lack access they lack the will to take advantage of that access. Other blacks look down at blacks wanting to get an education and better themselves. They think its being white or some shit. Their issue is that Record companies promote and hedonistic materialistic culture on blacks that encourage short term thinking, debauchery and violence.

>> No.11757113 [DELETED] 

>>11757101
It goes away if you ignore it

>> No.11757116
File: 293 KB, 2160x1222, 5FB6068C-614B-4171-B89F-1C55240C424C.jpg [View same] [iqdb] [saucenao] [google]
11757116

What are the odds that Chris has sneaked a gun onboard the ISS and ready to take out the ruskies if the president gives the order?

>> No.11757119

>>11757116
Hull decompression

>> No.11757122

>>11757119
He won’t miss

>> No.11757127 [DELETED] 

>>11757112
>>11756922
They manage if they have sufficient vision.

>> No.11757202

>>11757116
You wouldn’t need a gun to murder suicide everyone on the ISS.

>> No.11757219

>>11757119
>Hull decompression
Would take a long time. One atmosphere won't flow out of a bullet hole quickly, and you actually can block most of the outflow with common materials. Worst comes to worst, just close one of the ISS module hatches.

But to get back to reality for a second, if the Cosmonauts were murdered, the Russians would probably have no qualms about firing an anti-satellite missile at the International Space Station in retaliation.

>> No.11757224 [DELETED] 

>>11757112
The hedonistic and materialistic culture is shaped by the economic conditions. And, for that matter, so is the disdain for wanting to better yourself.

See, people in exceptionally poor communities rely on others within that community when finances run dry (which is often because poverty is a bitch of a thing). So members of that community are resources to each other, pouring time and effort into other members to try and stay afloat. And then someone leaves, taking what assistance they can provide off the table even as their ability to provide increases dramatically. It's obviously unfair to expect people to stay in a shithole when a better life is within their grasp, but it's also easy to see why they get mad. It's the same reason people in rural communities or dying industrial towns get assmad about the youth leaving for places that actually have jobs: losing those people condemns those towns to a swifter death, but it is also absolutely the right choice for those people to leave.

But none of this is strictly related to spaceflight, so I'll shut up about it now.

>> No.11757255

>>11756830
I think you'd need methane as an intermediate to synthesize the larger hydrocarbons. That's part of why SpaceX went with methalox for the Raptor.

>> No.11757271

“There are no constraints on the human mind, no walls around the human spirit, no barriers to our progress except those we ourselves erect.”-Ronald Reagan

>> No.11757304 [DELETED] 
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11757304

AYO HOL UP WHITEBOI

>> No.11757311

>>11756993
Depends mainly on how many G your payload can tolerate

>> No.11757325

>>11757311
Let's say 4G for human flight.

>> No.11757328
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11757328

>> No.11757329

>>11757328
neat

>> No.11757342

>>11756830
Complex hydrocarbons like kerosene is too much work to synthesize out of simple shit like carbon dioxide, you need complex hydrocarbons as the source to not make the process wasteful in the extreme.

>>11756833
Hydrogen is "easy". The problem with hydrogen is the sheer amount of energy required to make a meaningful amount of it regardless of the material you use. Ironically, the process that uses the least energy uses petrochemicals as the source of your "clean" hydrogen.

Keep that in mind the next time somebody is trying to sell you on a Toyota Mirai or some other "clean" hydrogen car over an electric.

>> No.11757344

>>11756914
Stop using common core.

>> No.11757356

>>11757325
Mars escape velocity from the surface is 5km/s, to reach this speed at 4G, you need 5000(m/s)/40(m/s2) = 125s
During these 125s, you're moving at an average of 2.5km/s, which mean you're traveling 125*2500 = 312.5km
So, if you have a mass driver able to constantly accelerate something to 4G, it needs to be at least 312.5km long. Honestly no idea if it's technically feasible.

>> No.11757362 [DELETED] 
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11757362

>>11756914

My gf is black. It gives me a lot of insight. I also grew up in a 90% black neighborhood as a kid.

Well for starters the bigger problem black people face is ...well ... "Black Culture". Rap is the biggest problem. The music glorifies gang shit, so of course some dumb kid is gonna say "Hey I can make more money robbing fools than going to college haha", and do it. What kid is gonna toil in some "boring" field like engineering and end up working a 9-5 job for the rest of his life when he can instead ride with a gang and make better money AND have more excitement, too.

Many friends I had back in high school did end up entering gangs both during and after high school.

Also a lot of black people have a constant bone to pick with whites. Not all and probably not even a majority, but a lot. That likely doesn't help with the mindset of branching into STEM. A black kid told his entire life that "Whitey is the devil" will never want to work with whites. As such he'll never enter STEM in the first place.

Socioeconomic status is big, but not as much as people think. Poor minorities and whites exist everywhere - it's not just a black problem. Trash exists of every race too. But it is a fact that people in poor areas tend to avoid getting a degree because it is A) Too expensive or B) They want a job right off the bat or C) Never finished high school in the first place.

The Black Community isn't even all that. Most black homicides are black - on - black. Black on black crime is horrible for several black neighborhoods. Black culture glorifies crime and being a gangster while also making fun of black people who decide to "act white" - in other words, who decide to better themselves. It is cannibalizing and it is sad.

I'm sure there's other stuff to talk about but I'm gonna get some sleep.

>> No.11757366
File: 272 KB, 1000x1000, 1000px-France_OlympusMons_Size.svg.png [View same] [iqdb] [saucenao] [google]
11757366

>>11757356
That's actually just about a perfect length match for building one up the western slope of Olympus Mons.

>> No.11757368

>>11756649
Teddy roosevelt and eisenhower are rolling in their graves

>> No.11757374 [DELETED] 

>>11756914
"Racialized"? The fuck?

All I want is to learn about plasma physics in peace-my race isn't important to my work. The best thing you can all do is confront actual bigotry if you see it, and just treat everyone like individuals.

>> No.11757379

Are there any dark horses in spaceflight right now?

>> No.11757381

>>11757379
Relativity are interesting.

>> No.11757389

>>11757356
>>11757366
Applying that math to a 50t payload to get power requirements is... actually not that bad. It comes out to 625 GJ / 125s or 5GW, assuming perfect transmission of energy and no losses, so even doubling that to 10GW for transmission losses, conversion losses, lack of superconducting magnets, etc. is totally doable with fission reactors.

>> No.11757394

>>11757342
>The problem with hydrogen is the sheer amount of energy required to make a meaningful amount of it regardless of the material you use.
Also the whole leaks-between-tank-molecules thing.

>> No.11757395

>>11757394
Yeah I was talking purely from a resource extraction point of view now, but that is also an issue. Huge fucking tanks that have no business being a first stage at sea level that requires solid booster training wheels is another one.

>> No.11757404

>>11757395
The Martian Yeet Cannon mass driver up Olympus Mons actually solves both problems. You have nukeplants to throw at cracking water and cryo storing the hydrolox, and it gives you orbit without SRBs, so you can build orbit-only hydrolox chemical or H2NT/LANTR ships that have v0 as Mars escape, so you can really haul ass and take advantage of that high Isp.

>> No.11757428
File: 878 KB, 1000x750, 3d-rendered-illustration-of-the-mars-olympus-mons-Illustration-Sebastian-KaulitzkiS.jpg [View same] [iqdb] [saucenao] [google]
11757428

>>11756993
It would be very inefficient, martian atmosphere is thin but would still make a lot of drag.
Maybe they could use the exceptionally high mount olympus, but I heard it's full of dust above it.

>> No.11757432

>>11757428
Olympus is actually one of the few places on Mars that sits above the dust storms. It's only dusty relative to orbit.

>> No.11757450

>>11757389
In the same vein, I was wondering if the moholes from the Mars trilogy were remotely feasible, so I calculated the power requirements just to lift the rocks from a 1x1x10km hole under Martian gravity.
If you're digging it in 40 years, you're extracting 24t of rock per second and you need an average of 400MW just for the potential energy of lifting rocks to the surface. Real energy consumption will be higher than that, maybe 10 times more? Still doable if you dedicate a nuclear plant just for it.
I kinda doubt a straight hole is possible though.

>> No.11757489 [DELETED] 

>>11757101
>>11756914
Why should it be an ally and why are you bringing this up? Its a clear cultural issue and I don't believe in putting an unqualified man in important positions just because they have brown skin or like to play tummysticks in their off time.

>> No.11757497
File: 126 KB, 915x704, EZjQuT4UMAAy1b7.jpg [View same] [iqdb] [saucenao] [google]
11757497

Big guy LC-36 is watching from the shadows...

>> No.11757505

>>11757450
What's the point of a mohole if you already need nukeplants to dig it?

>> No.11757506

Will Falcon Heavy see any use anymore?

>> No.11757517

>>11757506
Launching my giant penis

>> No.11757521

>>11757506
It will see some use, afaik there's even a new version with an extended second stage in the works.

>> No.11757523

>>11757450
Imagine the literal mountains’ worth of ore
My Dwarven heart swells

>> No.11757555

>>11757505
In the books, they were used for ore mining and to heat the planet, though I don't know if the latter is realistic

>> No.11757641
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11757641

>>11757119
>>11757219

>> No.11757644
File: 51 KB, 400x300, skylab museum.jpg [View same] [iqdb] [saucenao] [google]
11757644

>>11757328
kino

>> No.11757648

>>11757342
>The problem with hydrogen is
The other problem with hydrogen is liquefying it.
https://en.wikipedia.org/wiki/Liquid_hydrogen#Spin_isomers_of_hydrogen
>It slowly undergoes an exothermic reaction to become the para isomer, with enough energy released as heat to cause some of the liquid to boil.
...and the other other problem is it leaks out of everything.

>> No.11757657

>>11757648
I fucking hate hydrolox. It should be used exclusively for upper stages and shit built in space when we get to that point.

>> No.11757674

>>11756993
Escape velocity anywhere near the ground is not going to happen anon.
Only going to work on the moon.

>> No.11757683

>>11757497
I wish they would shove this into a museum

>> No.11757691
File: 18 KB, 240x240, ARSE_LOGO_medium.jpg [View same] [iqdb] [saucenao] [google]
11757691

>>11757644
Literally the only thing my retarded country has ever done that's good for space.
Other than putting up some radio receivers because we are on a side of the world no one else is on.
Keep handing out neetbux to meth addicts instead of exploring the stars. Pathetic.
https://spaceaustralia.com.au/

>> No.11757697
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11757697

>>11757691

>> No.11757733

>>11757657
Hydrolox is only good for upper stages if they need to be expended, because it attacks its own engines with embrittlement. If you need better than methalox you should be using at least NTR.

>> No.11757736
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11757736

>>11757691
You guys also helped launch the Black Arrow... until the Brits buggered off.

>> No.11757737

>>11757733
It's like a god damn fucking dead albatross we insist on lugging around with us. A millstone around our necks.

>> No.11757982

>>11757052

Unironically this is the best method of interplanetary travel. They should fly from planet to planet ferrying one or more "dinghy" landers docked. To prevent fallout contaminateion of earth or another planet, the actual strarship should be constructed in an orbiting dry dock and never itself land on a planet.

>Earth to Mars in a week instead of a year
>Earth to Saturn in a month instead of five years
>Earth to Pluto in three months
>Earth to Planet Nine (assuming it exists where predicted at 1500 AU) in a year

>> No.11758103

>>11756914
Immigrants of some groups consistently thrive in their destination countries, whereas other groups consistently fail to thrive over multiple generations. Every country that has experienced immigration would have to be prejudiced in very similar ways (have the same conditions of structural racism or whatever other claptrap is claimed) in order for this phenomenon to not infer something about the innate capabilities of one of these groups versus the other, is the hard truth of it.

>> No.11758116

>>11757450
>>11757523
In a related note, Mars barely has a molten core, right?

What's stopping people from digging hundreds or thousands of miles down to get at all the good shit?

>> No.11758128

>>11758116
Cause digging down that deep is pretty hard

>> No.11758138

>>11758128
>Not using a nuclear powered particle beam drill to get down there
>Not then using the ice cap nukes to restart the core dynamo

>> No.11758141

>>11758128
Point tunnel boring machine down, let it do its thing.
I wonder how Musk plans on packing up one of those things small enough to fit on a Starship? Some assembly required I suppose, just sending packed parts and a team of builders is probably easier than engineering a complex folding transformer thing.

>> No.11758143

>>11758116
IIRC there's still issues of pressure as one digs deeper.

>> No.11758148

>>11758141
It just dawned on me that the whole Boring Company thing was 4D chess

He pretends that he's making TBMs so basedboys don't have to wait in traffic, when they're actually there to tunnel the shit out of Mars

>> No.11758153
File: 5 KB, 209x212, Rocketdyne_Division_company_logo_1959.png [View same] [iqdb] [saucenao] [google]
11758153

>tfw there will never be a space company with a name as cool as Rocketdyne ever again

>> No.11758154

>>11758148
Everything he's done is for Mars, everything. Electric cars/Cybertruck? Rovers. TBM? Mars habitats. Starlink? Martian comms network.

>> No.11758159

>>11758138
...you've still got to provide the same amount of energy to do the work required to lift the mass out.

>> No.11758160
File: 97 KB, 202x236, virgin galactic.png [View same] [iqdb] [saucenao] [google]
11758160

>>11758153
*blocks your path*

>> No.11758172

>>11758116
Mars still has a temperature gradient and a mantle. Anything useful for resource extraction would still be in the single digits km. You run into mantle within tens of km anyway, and plastic deformation problems before that.

>> No.11758175

>>11758160
Shoo, tax dodge.

>> No.11758177
File: 229 KB, 314x365, Galactic_Virgin.png [View same] [iqdb] [saucenao] [google]
11758177

>>11758160
Fixed that for you.

>> No.11758189
File: 406 KB, 1365x2048, A5C43A22-3E86-4644-A577-610A5E975503.jpg [View same] [iqdb] [saucenao] [google]
11758189

>>11758177

>> No.11758203

>>11756407
When will shitliner fly with crew? 2022?

>> No.11758206

>>11758203
They're gonna have to prove that it works first.

>> No.11758212

>>11756679
https://www.youtube.com/watch?v=zeNytM7JdYY

>> No.11758220

>>11758206
Well that's another 5 unmanned test flights to work out the pajeetcode software then

>> No.11758228

>>11758220
One. They're going to have to do one unmanned full launch to the ISS with return then testing and QC at NASA before they can do the first crewed launch.
So I guess about a year, maybe a year and a half after whenever they manage that first proper demo mission without deorbiting or bugs threatening RUD.

>> No.11758239

>"Many in our Service feel this pain on a daily basis and we are all hurting as we have experienced the sickening events that have played out in our cities around the country," they wrote in reference to Floyd's May 25 death. " ... Racism is an enemy. It is an enemy of everything we know that is fair, right and just."
>They called on Space Force personnel to "look deeper" and probe blind spots and biases they might not fully be aware of.
>"We have an opportunity to get this right from the beginning and we are committed to doing so," Raymond and Towberman wrote. "We must build diversity and inclusion into our 'cultural DNA' -- make it one of the bedrock strengths of our service. Diversity is a strength, but only if we maximize our perspectives and experiences."
https://www.military.com/daily-news/2020/06/02/we-are-all-hurting-space-force-leaders-speak-out-death-george-floyd.html

Lmao, Space Force is already cucked.

>> No.11758242
File: 88 KB, 500x283, question sword.png [View same] [iqdb] [saucenao] [google]
11758242

>>11758239
>"We must build diversity and inclusion into our 'cultural DNA'
Why?

>> No.11758244

>>11758239
I look forward to the day we encounter real aliens and everyone gains a bit more perspective on the differences between human beings
starting to think Ozymandias was right

>> No.11758250

>>11758154
Starlink is also a funding mechanism for Mars colonization because rural ISPs are a super shitty market right now.

>> No.11758252

>>11758239
The military is pro-diversity because they're an arm of the federal government. The only way to uncuck them is to end affirmative action and the rest of the associated tripe. Then they can go back to being more of a meritocracy.

>> No.11758253

>>11758250
True, my area has exactly one provider and everyone hates them for being shit. Two birds one stone, prove the tech and make a buck while giving us rural retards better 'innernet.

>> No.11758254

>>11758242
Because space belongs to us, goy!

>> No.11758256

>>11758242
diverse groups of people are better at solving problems
this is a fact supported by decades of research

>> No.11758275

>>11758256
If that's what a meritocracy results in, cool.

>> No.11758278

>>11758239
They kind of have to as Dems are licking their lips for the day they can disband Space Force. Every post about USSF or ULA launches has the same comments.


>>11758244
I was on a coach trip that was abducted by aliens and the Grays were awkwardly racist. They literally wouldn't talk or interact with any of the black people on the bus except one that kept spitting the words 'bad boy' in a really high pitched toddler voice at a black guy like it had never physically uttered a word before. They were otherwise telepathic. God I'm cracking up just thinking about the fucking creep. Funny day frankly.

>> No.11758280
File: 1.04 MB, 670x1234, 7EC1DC01-72D6-4D1A-AB91-D4DB9D35248C.png [View same] [iqdb] [saucenao] [google]
11758280

>>11758256
True, NASA hires teams that all have the same mindset of being social credit points
They need true diversity on their staff

>> No.11758287

>>11758242
It's the one thing the space racists fear.
>>11758244
I imagine that aliens with the ability to visit our solar system would be more utilitarian than us and instantly recognize the harm in forcing together groups that want to maintain their own separate identity and cultural practices. The actual science is pretty damning to diversity on a societal level, it lowers public trust, increases the crime rate, makes people less likely to volunteer in their community and donate to charities. The fallout over the protests is clear proof of how disruptive it can be.

>> No.11758289

>>11758278
>They kind of have to as Dems are licking their lips for the day they can disband Space Force. Every post about USSF or ULA launches has the same comments.
Or we could just drop rocks on the Democrats. They're open seditionists at this point and shouldn't be allowed to hold power again.

>> No.11758293

>>11758289
>"I want to disband a national asset because I don't like the guy who made it!"
I don't understand how people let themselves fall so far down rabbitholes of madness.

>> No.11758299

>>11758293
To be fair Obamacare shit seems much the same but I'm not American. Looks like Trump will do fine in Nov but I do hope Space Force survives. It'll look really stupid when it gets reinstated anyway in a decade with a different name.

>> No.11758306

>>11758293
People burned down Constantinople because their chariot team (which also happens to be their political parties) lost and the Emperor had to call another match to stop the 3 day riots
Never underestimate human factionalism even if it goes against their interests

>> No.11758308

>>11758293
>>11758289
>>11758278
The Space Force was voted by both parties, maybe stop living in your fantasies

>> No.11758309

Hello, I'm new to space but isn't it kind of scary?

>> No.11758311
File: 50 KB, 946x710, Armadillo_Aerospace_lander.jpg [View same] [iqdb] [saucenao] [google]
11758311

Amateur rocketry is a thing, but can amateur landers be a thing too with lowering prices to get something to space? Or would the technology behind landers be too advanced and expensive for amateurs to work on?

>> No.11758313

>>11758309
yes
get out while you can and don't look back

>> No.11758317
File: 749 KB, 512x512, eruption.gif [View same] [iqdb] [saucenao] [google]
11758317

>>11758299
That was a whole nest of worms but yeah, I see your point. I also hope Space Force survives, anyone could have done it and it'd still be a good idea.
>>11758306
What a sight that must've been, goddamn.
>>11758309
Yeah but also pretty.

>> No.11758318

>>11757219
I don't think the Russians would necessarily go for the ISS but rather just start dropping nukes onto the US.

>> No.11758319

>>11758287
>The actual science is pretty damning to diversity on a societal level, it lowers public trust, increases the crime rate, makes people less likely to volunteer in their community and donate to charities.
Only collectivists care about these things. Individualist America requires diversity to produce capital by solving problems better than everyone else (it is no mistake that most prominent inventors are first or second generation immigrants) and stay dominant above homogeneous, collectivist societies. People on this dumb website who are simultaneously in favor of an ethnostate and capitalism are worse than communists.

>> No.11758322

>>11758311
It should be able to be done due to cheapening electronics and sensors which is the main issue for landers
Ardunio circuits and gyros would be able to control a basic bitch lander if programmed correctly

>> No.11758323
File: 870 KB, 2048x1522, Dshys0GVYAA5LKG.jpg [View same] [iqdb] [saucenao] [google]
11758323

>>11758309
Yes, but like a stunning hottie with an extensive knife collection and questionable mental stability, the danger is a part of the excitement.

>> No.11758326

>>11758309
Only if you touch it.

>> No.11758329

>>11758293
To the Left, politics is Christianity with the serial numbers filed off. They have a priesthood - the media. They have an original sin - "white privilege." They have an apocalypse - "climate change." They have penances they perform - basically their whole policy platform. They fully believe in Whig History and that they are on the correct side of it. They hate the President because they see him as Satan incarnate usurping the seat of their faith. Imagine how Christians would react if the next Pope was a red guy with horns and a spade tail.

By that same token, no large population ever changed religions because of vigorous political debate, so we're probably going to have to kill them.

>>11758319
>oy vey only collectivists care about the fabric of society, we have ROI to worry about!
This is precisely the attitude that produced Hitler.

>> No.11758330

>>11758322
>>11758311
I think a lot of "amateur landers" are going to basically be MOOSE skydiving competitions at first. Amateur robot landers on other worlds don't make sense until the price of moon or Mars shots gets down to about the current price of LEO.

>> No.11758333

>>11758319
We're talking specifically about racial diversity, not immigration. The vast majority of hyper-successful immigrants to the US are not racially diverse.

>> No.11758339

>>11758330
>I think a lot of "amateur landers" are going to basically be MOOSE skydiving competitions at first
That could be a good thing though. Training a whole new generation of engineers who are not only open to the idea of landing rockets, but have some knowledge on the subject. They could diffuse into the various aerospace companies and allow said companies to develop their own landing boosters.

>> No.11758342

>>11758309
lol

>> No.11758358

>>11758311
Blue Origin should be working on sub orbital package delivery rockets. Like SAM launchers.

>> No.11758360

>>11758322
Can't find the archives of Armadillo Aerospace now but it was really interesting to see the actual, day-to-day, development problems they encountered.

>> No.11758367

>>11758239
They’re future-proofing themselves against defunding attempts by Democrats who may try to tear down something Trump supported as a political stunt.

>> No.11758445

>>11758153
> Starphallus
> "Fucking space, one rocket at a time"

>> No.11758463

Starlink launch attempt tonight at 9:25 pm from florida.

>> No.11758474
File: 209 KB, 2045x1344, Starship.webm [View same] [iqdb] [saucenao] [google]
11758474

>> No.11758476

>>11758463
Damn, I didn't realize how many they had up there already, feels like yesterday we watched the first one go up. I'll be watching.

>> No.11758482

>>11757119
Plastic bullets are used aboard aircraft

>> No.11758483
File: 569 KB, 2000x1333, FredWhipple_WEB.jpg [View same] [iqdb] [saucenao] [google]
11758483

>> No.11758484

>>11758474
>Webm of a single image
What did you mean by this?

>> No.11758493

>>11756480
Define technocracy plz

>> No.11758494
File: 672 KB, 2045x1344, Starship2.webm [View same] [iqdb] [saucenao] [google]
11758494

>>11758476
Remember when people said its impossible to launch that many? I remember when they said its impossible to land rockets back on barge. I'm now reading people saying its impossible to build Starship.

>>11758484
Saves file size compared to single jpg of ~5MB. Here's the slideshow.

>> No.11758517
File: 147 KB, 1024x768, 1433108483509.jpg [View same] [iqdb] [saucenao] [google]
11758517

>>11757982

This would require amending the non-nuclear proliferation treaty to not include spacecraft propulsion.

But otherwise this is the best way to truly open up the solar system to the public.

>> No.11758519

>>11757255
Yes. It would not be difficult to manufacture propane either, which gets you all the advantages of kerosene and more. There is never a reason to synthesize beyond propane.

>> No.11758521

>>11757389
10 GW is totally doable with solar even, but you would only be able to launch during the day.

>> No.11758522

launch thread will be up in a couple hours. Weather is 60% GO.

>> No.11758526 [DELETED] 

>>11758494
you spin me right round baby right round like a record baby right round round round

>> No.11758527
File: 989 KB, 4096x2730, trump space force flag.jpg [View same] [iqdb] [saucenao] [google]
11758527

>>11758517
>This would require amending the non-nuclear proliferation treaty to not include spacecraft propulsion.
Or just saying "we're doing it, deal with it faggots."

>>11758521
Day/night is less of a concern on Mars than the dust storms. Crazy dust storms are probably the time you want the most ability to leave the planet, but also make solar useless.

>> No.11758530
File: 1.76 MB, 992x1339, E30AD924-C1A9-42DF-A317-2E77B8F755C8.png [View same] [iqdb] [saucenao] [google]
11758530

It sucks that SN4 died but you have to admit that SpaceX is getting closer and closer to a final product.

The only thing to do now is test it using the :

1)150 m Hop
2) 20kM Belly Flop
3) 100 kM Belly Flop

Once those tests are done well likely see similar testing on Superheavy. Or not. Maybe they’d rather get to orbit sooner.

Either way Starship is actually making great R&D gains. We should be optimistic if anything.

Also the last two failures of Starship have been not due to the ship itself, but the ground people/equipment. SN3 got smushed due to a tank filling error, and SN4 had a faulty GSE valve.

So yeah it sucks SN4 blew up but they already have two more almost done. But expect more explosions, because that’s what progress sounds like.

>> No.11758531
File: 167 KB, 240x240, spinning crane IRMA.webm [View same] [iqdb] [saucenao] [google]
11758531

>>11758526

>> No.11758532 [DELETED] 

>>11758527
>Crazy dust storms are probably the time you want the most ability to leave the planet
Why
The planet is where all the resources are, the planet is where all the shelter is, why the fuck would you leave
That mentality is exactly like that of old people who freeze to death in their cars during a blizzard because they decided they'd better leave to escape the weather instead of just sitting around a cozy fire at home

>> No.11758533
File: 236 KB, 480x270, anime hype.gif [View same] [iqdb] [saucenao] [google]
11758533

>>11758494
>Remember when people said its impossible to launch that many? I remember when they said its impossible to land rockets back on barge. I'm now reading people saying its impossible to build Starship.
Shit's getting interesting finally.

>> No.11758539

>>11758530
AFAIK, SN4 failed due to quick disconnect failure. So it wasn't a rocket failure but a minor feature failure that led to this catrastrophe. I think they mostly have everything under control now with few unknown unknowns.

>> No.11758542

>>11758539
I mean I guess that’s good news. Sucks that it exploded but at least it’s not something wrong with the rocket.

>> No.11758543

>>11758542
They've got like half the SN5 and a chunk of SN6 already welded together. Didn't some ring have SN7 already written on it too?

>> No.11758544

>>11758330
I'm REALLY looking forwards to MOOSE

>> No.11758549

>>11758539
>meanwhile a good chunk of /sfg/ was acting like it was an objective fact that the failure originated in the thrust structure due to 144p youtube screenshots
laffin

>> No.11758550
File: 54 KB, 597x775, 54C7D611-E972-4E2E-87F3-D8092D214985.jpg [View same] [iqdb] [saucenao] [google]
11758550

>>11758549
Chinese Shills and EnoughMuskSpam Lose AGAIN

>> No.11758559

>>11758256
I'm all for diverse viewpoints and backgrounds to help solve problems, but the competency of the individual should be held as the highest standard. Diversity all too often means filling quotas with under qualified people and then purging the people with the "wrong" viewpoints. Look at google. What have they done in the last several years? I can't think of a single noteworthy accomplishment besides hiring a bunch of pink hairs and dick excisers. They've become bloated like all the other large companies and have stopped innovating and instead just try to maintain until they die or get broken up.

>> No.11758584

>>11757328
Can we petition to expunge the meatball and restore the worm?

>> No.11758592

>>11758584
Both have their place.

>> No.11758622

>>11758299
It was a severely flawed, barely-function knockoff of Romneycare, which just shows how much easier it is to get the average bootlicker to accept a policy if you just slap a Democrat's name on it. Like all socialist healthcare policies it resulted in sharp increase in actual overall cost for most middle and lower class people and a sharp decrease in quality of care as well. Promises that were meant to be part of the policy didn't pan out (you can keep your doctor hurr, you can keep your plan durr).
It's not a partisan thing either, it was a stupid plan when Romney proposed it and Obama didn't make it any better, central planning is just shit when it comes to vital services, no matter who proposes it.

>> No.11758630

>>11758559
>I can't think of a single noteworthy accomplishment besides hiring a bunch of pink hairs and dick excisers.
https://www.youtube.com/watch?v=-ZNEzzDcllU

>> No.11758638

>>11758493
rule by autists who just want to make rocket
>>11758527
>make solar useless
no, but it does go from "enough power to drop rocks on Earth" to "enough power to run our life support and play garry's mod"

>> No.11758639
File: 1.04 MB, 700x621, Moonbase Alpha.gif [View same] [iqdb] [saucenao] [google]
11758639

Would mining the moon for Titanium be worth it?

>> No.11758640

>>11758539
So they lost two prototypes over crappy mistakes.

This is not looking good.

>> No.11758641 [DELETED] 

>>11758630
>he's a quantum supremacist
fucking piece of shit, classical computers are just as valuable and capable of solving problems as quantum computers

>> No.11758642
File: 364 KB, 2048x1618, EZmh608X0AMTo7I.jpg [View same] [iqdb] [saucenao] [google]
11758642

DM-2 booster retracted all legs while only supported by octograbber.

>> No.11758644

>>11758530
btw, is there any pic of the raptor which was on SN4?

>> No.11758652
File: 53 KB, 256x256, ash-pile.png [View same] [iqdb] [saucenao] [google]
11758652

>>11758644

>> No.11758655

>>11758640
Two prototypes that cost ~1 month each and a few mill each to produce. In aerospace terms they may as well be throwing away coffee machines.

>> No.11758659

>>11758530
Except that there will be multiple short (150 meterish) hops. That's what Hans said in a recent interview.

>> No.11758660 [DELETED] 

>>11758639
Not with modern technology. Not even with future technology like electric Lunar rail-gun launch systems. Titanium just isn't worth that much.
Starship could provide cheap enough launch services to allow for marginally profitable mining of platinum and other expensive metals, and unlike the asteroid mining meme you wouldn't instantly crash the market with no survivors.
Of course the most valuable product on the Moon is actually any industrial material that you can produce in-situ rather than needing to take it from Earth. Producing steel for habitats would be great, because it'd let you sell construction projects to countries that want to into space but can't afford to/don't want to bother to develop their own highly reusable launch vehicles. ESA wants a Moon Village? Sure, sign on the dotted line please, we'll have your 100,000 cubic meter living space habitat built and ready for furnishing in four months, that'll be $250 million.
Just no jews and no chinese bugmen allowed.

>> No.11758661
File: 979 KB, 2448x2448, Scott_King%27s_piece_of_paper.jpg [View same] [iqdb] [saucenao] [google]
11758661

>>11758644

>> No.11758663
File: 77 KB, 2045x1151, Starlink7.webm [View same] [iqdb] [saucenao] [google]
11758663

Starlink L7 tonight @ 9:25. Thunderstorm might cause it to be delayed, we'll see.

>> No.11758666

>>11758640
>this is not looking good
You're right, things are pretty bleak. Time to pack it up and hand over all aerospace contracts to ULA

>> No.11758665 [DELETED] 

>>11758644
The mass simulator (~25 tons of rolled sheet steel welded together) landed directly on top of it and sheared it right off of the base of the vehicle.

>> No.11758668

>>11758661
Why did you post a picture of SLS?

>> No.11758669 [DELETED] 

>>11758655
This. Each SN prototype so far has likely cost less than a single successful solid motor test performed by whoever builds those.

>> No.11758670

>>11758668
no, that's a picture of raptor #20 after being crushed by the mass simulator

>> No.11758677
File: 123 KB, 600x300, dickshelby.jpg [View same] [iqdb] [saucenao] [google]
11758677

>>11758666
BASED

>> No.11758684

>>11758670
https://streamable.com/9bf1fm

>> No.11758692
File: 59 KB, 879x485, talon-a-879x485.jpg [View same] [iqdb] [saucenao] [google]
11758692

How can spaceplanes be made as safe and reliable as the new reusable vertical launch systems that are taking over now?

IMO spaceplanes remain superior to capsules in transporting humans and other G-sensitive cargo to orbit, and are also superior in potential resuability. But the main obstacles are how hard it is to equip them with proper launch abort systems and the development costs being much higher than capsules.

Maybe you could fix small solid motors to use as escape systems that you jettison when you cross the Karman line, and have folding internally stored wings that you extend after re-entry or possibly use for horizontal takeoff then retract as you gain speed.

>> No.11758696

>>11758692
Starship is a spaceplane
if you don't want to recover the second stage, you can put your spaceplane (capsule) on top of a current generation vertical launch system
also what do you mean "reusable vertical launch systems" (plural), there's only one right now.

>> No.11758698
File: 73 KB, 1234x648, mass_driver_by_athan1995-d8mt9ef.jpg [View same] [iqdb] [saucenao] [google]
11758698

>>11758692
Planes need runways. Space planes need space runways... also known as mass drivers. Vertical launch spaceplanes are always going to be Shuttle tier memes.

>> No.11758699

>>11758641
All Bits Matter

>> No.11758705

>>11758698
>vertical launch spaceplanes are always going to be shuttle tier memes
what the fuck do you think Starship Super Heavy is?

>> No.11758708

>>11758692
Space planes have no advantage to orbit. Their advantage is in being able to control their reentry descent velocity.

>> No.11758717

>>11758705
Why do you keep insisting Starship is a spaceplane? It vertically lands. How many spaceplanes (or any planes) do that as their sole means of landing?

>> No.11758718

>>11758717
it has wings

>> No.11758723

>>11758718
Fins. To be wings they need to actually generate a substantial amount of lift.

>> No.11758724

>>11758723
it has a comparable hypersonic L/D ratio to the shuttle

>> No.11758728

>>11758718
For skydiving. The way a 737 lands and the way a skydiver in a wingsuit lands are not the same.
Are the "wings" used during landing? No, they are used before landing to increase resistance before Starship flips back on its ass and braps onto the surface.

>> No.11758729

>>11758724
no it doesn't

>> No.11758732

>>11758729
yes it does

>> No.11758736

>>11758718
By that logic the Saturn V is a space plane because it has “wings” at the bottom. Starship is a rocket with aerodynamic fins for attitude control. At no point does it fly horizontally like a plane... it falls out of the sky to bleed energy and lands vertically

>> No.11758738
File: 1.06 MB, 3456x2304, plane.jpg [View same] [iqdb] [saucenao] [google]
11758738

oh shit check it out a spaceplane just flew over my house

>> No.11758740

>>11758736
the S-1 never reentered from orbit, so it's not a spaceplane
Starship most certainly isn't a capsule.

>> No.11758741

>>11758740
It's a rocket ship. It's not a plane.

>> No.11758742

>>11758740
Like the fucking name implies, it's a SHIP.

>> No.11758749

>>11758741
If it's not a spaceplane, but it reenters from orbit, what is it? It's not a capsule, it's not a biconic, it's a spaceplane.
>>11758742
"spaceship" is a generic identifier for everything we've put in space
the Apollo CSM/LEM stack was a spaceship
the Shuttle was a spaceship
geostationary satellites are spaceships
that one japanese asteroid probe that delivered a reentry capsule back to Earth was a spaceship

>> No.11758750

>>11758740
What’s the distinction in your view then? This so driving me crazy I have to change your mind.

>> No.11758753
File: 252 KB, 286x325, Pity_the_Dead.png [View same] [iqdb] [saucenao] [google]
11758753

>>11758663
>All part are saved, even the capsule halfs.

>> No.11758754

>>11758741
>>11758742
No dudes don't you see? It goes into the air and comes back, AND it has broad flat surfaces on it. How can that mean anything other than a shuttle-tier meme spaceplane?

>> No.11758758

>>11758753
Well, not the second stage and the rack for the satellites. But they can't make miracles out of such a small rocket.

>> No.11758763

>>11758749
>If it's not a spaceplane, but it reenters from orbit, what is it?
A rocket ship. It launches as a rocket, lands as a rocket, and doesn't have airfoil wings.
>the Apollo CSM/LEM stack was a spaceship
Yes.

>> No.11758766

>>11758749
Starship is going to be a new technology, something that hasn't existed before. When cars were invented they didn't insist on calling them "metal horses" or whatever the fuck, they created new terms like automobile or car. Starship will be whatever it ends up being, you could launch one into orbit and use it as a space station if you want. Would you still call it a spaceplane then?

>> No.11758767

>>11758749
>It's not a capsule, it's not a biconic, it's a spaceplane.

It's not an airplane though; it's not really capable of sustained gliding. Hell, I don't think it's capable of generating enough lift to move further sideways than it falls without an atmosphere skipping maneuver, which is something that the Apollo capsules did to reduce reentry heating.

>> No.11758768
File: 2.66 MB, 640x360, fairing caught.webm [View same] [iqdb] [saucenao] [google]
11758768

>>11758753
I hope they catch these ones too.

>> No.11758771
File: 366 KB, 1300x1040, XU74ft4.jpg [View same] [iqdb] [saucenao] [google]
11758771

Going back to the original point, yes, mass drivers at spaceports would make spaceplanes viable.

>> No.11758773

Starlink launch tonight.

I wonder .

Can they use starlink from the ISS?

>> No.11758774
File: 60 KB, 660x500, 2b618433c361f898840b4f2439ed9e3c.jpg [View same] [iqdb] [saucenao] [google]
11758774

>>11758750
if it's round or , it's a capsule
if it's not, it's a spaceplane
vertical landing is just a mode, the Harrier and F-35 do vertical landing. There were a few Nazi memeplanes and American post-WW2 research projects that did vertical takeoff and landing exclusively, although I think the american research projects never got off the ground and the nazi memeplanes did a Gagarin for pilot recovery
>>11758754
Spaceplane doesn't automatically mean "meme" (meaning bad idea) there are perfectly valid reasons to use lifting body reentry. Pic related were spaceplane ideas and not stupid memes.
Putting a spaceplane second stage on top of New Glenn would be great.
>>11758763
>Yes
I'm glad somebody gets me.
>>11758766
They absolutely called them self-propelled carriages for a while. Yes, using a spaceplane as a space station is perfectly valid. We did that with Shuttle for a while.
>>11758767
They need a quite large hypersonic L/D ratio (sustained hypersonic gliding) for Mars entry.

>> No.11758778

>>11758774
>They need a quite large hypersonic L/D ratio (sustained hypersonic gliding) for Mars entry.

You don't need any significant aerosurface for hypersonic lift.

>> No.11758780

>>11758774
>the Harrier and F-35 do vertical landing
They don't do tail sitter suicide plunge landings with their wing surfaces perpendicular to the ground, numbnuts.

>> No.11758781

>>11758778
And yet they have significant aerosurface

>> No.11758782

>>11758773
maybe? they're at a higher orbit

>> No.11758786

>>11758773
Starlink is just internet satellites right?

>> No.11758788

>>11758780
I don't see how that's relevant, the Harrier and F-35 wings don't perform any function during hover maneuvers

>> No.11758791

>>11758773
ISS is ~140km below the altitude for Starlink, so I assume that if they had an antenna there would be little issue. Imagine high-speed wi-fi on the Station.

>> No.11758792

>>11758786
Starlink has significant investment from the Military as well. We believe they want to use them as internet satellites, although they're using terms like "combat theatre connectivity" or something

>> No.11758796

>>11758781
>And yet they have significant aerosurface

For the production of drag and control authority, not for lift.

>> No.11758797

>>11758786
They probably could add a transceiver to the ISS once communication between constellation layers is enabled.

>> No.11758798

>>11758791
They may be too close to get a consistent signal. It really depends on the ability of Starlink to depress the signal.

>> No.11758801

>>11758796
>drag and control authority
they produce hypersonic lift as well as control authority in all regimes.
Of course, the big tube produces a significant amount of lift as well in hypersonic flight, I've heard the optimum for hypersonics would be a big table

>> No.11758802

>>11758774
I only said shuttle-tier meme because that was the verbage originally used when claiming that starship is a shuttle-tier meme.

Since you're so insistent I might as well throw in the knockout punch that no one else has mentioned that you 100% cannot argue through.

Starship (or even a craft like starship) will eventually be able to land on celestial bodies that have zero atmosphere whatsoever, meaning it'll completely rely on vertical landing and have no use for its fins. The lunar variant of Starship is an example of this.

If you're really going to argue that "lands solely using thruster propulsion without the use of any aerodynamic forces" fits the bill of being a "plane" then you might as well throw out the classification and just call it a flying machine

>> No.11758808

>>11758801
Basically everything produces lift simply by being angled upward against an airstream; lift is effectively as inevitable as drag is, and is not the aerodynamic quality that the flight surfaces are optimized to produce.

>> No.11758814

>>11758802
I've landed spaceplanes on the Mun in KSP
the aerosurfaces (and mk2 spaceplane surfaces lol) were dead weight, but I brought them with me. They helped a lot when I hit that atmosphere doing 3.5 km/s (jeez why is the Kerbol system so small)
The HLS Starship for NASA is not a spaceplane. It has no aerosurfaces and no aerodynamic control authority.
A cargo Starship landing on the moon, offloading cargo, and then flying back to Earth for aerocapture and reentry would still be a spaceplane.
Look man it's got aeroflappy bits, so it's a space plane. It doesn't do horizontal landing, but other planes don't do that either. It produces no lift once it's transsonic, but that's not a big deal either. It's a plane that is optimized for hypersonic flight, and that looks a bit alien, and that's okay.

>> No.11758818

>>11758814
I think your generalization of spaceplanes as anything that utilizes active control of airflow with aerosurfaces is overly broad, and carries connotations of flight control and design optimization points that do not readily apply to all vehicles that possess the relevant active control surfaces.

>> No.11758819
File: 1.88 MB, 4668x2659, 723BEC85-4D9F-43C5-A870-E9D5E38A9FD8.jpg [View same] [iqdb] [saucenao] [google]
11758819

So Starship is a spaceplane right?

Also can’t Starship just destroy Blue Origin’s tourist base? I mean a single flight is $2 Million for an up and down hop. Carry a hundred or so people. Bam, it suddenly costs $20,000 per person.

>> No.11758823

>>11758814
The wings must produce lift at subsonic speeds to be a plane.

>> No.11758824

>>11758819
wrong

>> No.11758826

https://twitter.com/US_SpaceCom/status/1268288047755321344

>> No.11758833

>>11758819
Yes. Yes. What I really want to see is a VTHL vehicle (like the Kliper or Dream Chaser or X-37) that has the 6 km/s of dv it needs to be used as an upper stage. Land the first stage like F9 or Super Heavy and reuse both stages. I think New Glenn would be perfect for this, with its big 1st stage wings.
>>11758823
You're being racist against dedicated hypersonic vehicles, anon.

>> No.11758836

>>11758826
>dialogue on race
Unless they mean alien races no thanks.

>> No.11758843

>>11758833
>losing the argument? shout racism to declare victory!

>> No.11758846

>>11758826
delete this

>> No.11758852

Just realized that Blue Origin's New Glenn rocket uses significant aerosurfaces for subsonic lift and control authority throughout flight. I am willing to accept that the 1st stage of New Glenn is also a spaceplane.

>> No.11758863
File: 69 KB, 640x360, starship landing.png [View same] [iqdb] [saucenao] [google]
11758863

Someone tell me how the fuck this is, in ANY way, similar to Shuttle. It's not a spaceplane.

>> No.11758865

>it's a semantics episode
Starship is a sandwich.

>> No.11758874

We need to get off our asses and figure out a heavy lift vehicle that can at least reach orbit, /sci/ needs this
Any ideas?
>>11758865
>Radical Spacecraft Anarchy

>> No.11758877

>>11758865
No, it's a hot dog.

>> No.11758879

>>11758865
I completely agree, if you're willing to accept that stainless steel is bread.

>> No.11758882

Starship is a dumpling.

>> No.11758884
File: 97 KB, 600x369, Star_Raker_spaceplane.jpg [View same] [iqdb] [saucenao] [google]
11758884

>>11758819
>No mention of Star Raker
Fucking plebs.

>> No.11758886

>>11758865
starship is a layer cake

>> No.11758894

how far could 4ASS get with a metal 3d printer

>> No.11758898
File: 2.06 MB, 1396x1112, Rockwell Star Raker SSTO aesthetic.png [View same] [iqdb] [saucenao] [google]
11758898

>>11758884
Excuse me while I single handedly assemble this 1 GW spaced based solar power station megastructure.

>> No.11758903
File: 300 KB, 1167x1198, dcx.jpg [View same] [iqdb] [saucenao] [google]
11758903

>>11758863
People are so dumb, if we put tiny little aerodynamic fins on the bottom of the DC-X they would suddenly classify it as a spaceplane because
>muh winglets

>> No.11758908

>>11758141
>I wonder how Musk plans on packing up one of those things small enough to fit on a Starship?

They’d build it on Mars.

>> No.11758910

>>11758903
does it utilize significant lift

>> No.11758918

>>11758903
The greatest goal of a spaceplane is to enable easy turn around times for spaceflights due to having infrastructure and mission structure similar to airliners. Launching shit off of a launch pad for said spacecraft to then be recovered and refurbished within months at best is never going to be economical compared to landing it on a runway, giving it a check over, loading it up, and sending it up again from said runway.

>> No.11758920
File: 83 KB, 692x388, not a spaceplane.jpg [View same] [iqdb] [saucenao] [google]
11758920

>>11758910
For this sake, let's say the fins don't generate lift. Just like Starship.

>> No.11758923

>>11758309
“I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.”


― Frank Herbert, Dune

>> No.11758925

>>11758918
horizontal landing and quick turnaround are orthogonal, anon

>> No.11758926

>>11758865
>has one continuous outer surface
>overflowing with hot filling
>mostly made by mexicans
so where were you when you realized Starship was a tortilla?

>> No.11758934

>>11758918
Elon is extremely autistic and wants Starship to be rugged enough to launch, fly in a suborbital flight, and land in other cities. His goal is to have a turnaround rate high enough where that it could compete with airliners. Any "refurbishments" could be done by a vertical infrastructure without a runway. While I doubt this will happen, it's definitely not impossible

>> No.11758937

>>11758494
It's not impossible to build Starship, but goddamn, don't fall over your fucking feet trying to build it as fast as possible. Last two failures now had nothing to do with the rocket itself.

>> No.11758939

>>11758926
It's made by space cowboys in Texas. If anything it's Tex-Mex

>> No.11758940
File: 511 KB, 840x488, 1591079674392.gif [View same] [iqdb] [saucenao] [google]
11758940

>>11758894
Depends on how long it takes Relativity Space to call the cops.

>> No.11758944
File: 2.92 MB, 450x360, DCX_flight.webm [View same] [iqdb] [saucenao] [google]
11758944

>>11758903
>DC-X
That thing was kino.

>> No.11758948

>>11758944
>liquid hydrogen
>using boomer RL-10 engines

>> No.11758956

>>11758948
Now imagine it with Methalox and a first stage. Basically what Elon is doing, is it not?

>> No.11758960

>>11758956
Yes, but how would it descend from orbit? It would be more of a biconic capsule, yes?

>> No.11758962

>>11758960
Yeah the plan was to use the larger bottom as a heat shield

>> No.11758965

>>11758937
its just a starship bro. the place is lousy with them. they'll just build more :^)

>> No.11758968

>>11758937
Mmmm yeah but that's kind of the design philosophy of SpaceX. Because they aren't building it to appease politicians (i.e. SLS) they just build them and push them to their limit. Sort of like how grasshopper was a shitty test vehicle and they came out with reusable Falcon 9's shortly thereafter.
If I remember correctly Elon plans on building something like 19 prototypes before the final design, meaning they have like 14 more to build and explode before we start seeing orbital flights

>> No.11758969

>>11758665
Neat.
Would be pretty nice if they kept it as a souvenir

>> No.11758996

>>11758969
I really hope that there's going to be a Starship Development Museum at the future Boca Chica Spaceport.

>> No.11758999

>>11758996
Musk seems to not be interested in saving anything for museums which is fine—it'd be pretty presumptuous anyway

>> No.11759002

>>11758996
I also hope Boca Chica spaceport gets a name if they start launching and landing Starships from there. Crockett Astrodome or something?

>> No.11759004

>>11758999
not exactly true. He was all for the Smithsonian getting an F9 booster but they wanted SpaceX to pay for the transport and installation

>> No.11759008

>>11759002
Brauntown.

>> No.11759009

>>11759004
I guess if we want a Starship museum somebody will have to pay for it's creation out of pocket. I can at understand that, SpaceX's specific goal is to push space exploration forward, preservation is valuable however it isn't directly relevant to progress.

>> No.11759013

>>11759008
10/10

>> No.11759018

>>11759008
>>11759013
Damn, 8/8 lmao

>> No.11759021

>>11759004
he ended up giving one to Houston

>> No.11759022

>>11759004
That was afterwards, though, not during development. To start hoarding away pieces just in the hope that it really is the thing that changes everything would probably inadvertently doom the project just out of cosmic spite.

>> No.11759025

>>11759002
>we're here at Ol' Musky's Methane Swamp for the inaugural flight of Starship Imagine the Smell

>> No.11759032

>>11759025
>T minus 5... 4.... 3... 2... 1... BRAAAAAAAAAAP

>> No.11759043

>>11757982

Yeah but the propulsion system should be refined to the point we're we wouldn't have to build thousands of tiny nukes for propellant.

We should use giant bell nozzle like engines where pulverized nuclear fuel dust is injected and bombarded with microwaves to trigger fission or some shit.

I like your idea of dinghy capsules being the means of being shit up from a planet's surface to the main ship, which then ferrys everything to and from interplanetary destinations. I would legit want to see Musk's opinion about this.

>> No.11759044

Can you destroy atoms of heavier elements and turn them into multiple atoms of lighter ones?

>> No.11759048

>>11759043
>I like your idea of dinghy capsules being the means of being shit up from a planet's surface to the main ship, which then ferrys everything to and from interplanetary destinations

That’s just what Apollo did

>> No.11759052

>>11759044
Yes, it also is a good way to get electricity
We should build one of these transmutation reactors

>> No.11759058

>>11759044
In theory yes. In reality I doubt that will be possible in the next thousand years.

>> No.11759060

>>11759048

Yeah but you wouldn't have to ride in the cramped capsule for the whole trip. Just the rendezvous with the mothership.

The ideal nuclear propelled mothership would have a rotating habitat for crew which provides basic anemities and artificial gravity.

>> No.11759068

>>11759044
that's called fission
it doesn't happen often, and when it does it makes a lot of heat

>> No.11759072

>>11759068
I’d figure you could break them apart simply by dumping enough energy into them, and overwhelming the binding energy

>> No.11759076

>>11759072
I think I asked some physicists one time and apparently that's almost enough energy to just summon particles out of nothing

>> No.11759091

>>11758956
>>11758962
So its like Blue Origin's New Shepherd. Literally DCX's employees went to work on New Shepherd.

>> No.11759096

>>11759076
You’re probably thinking of color confinement. You can’t isolate quarks because the energy required to break apart the subatomic particles that quarks compose just makes another particle. I was referring to breaking, say, iron into multiple hydrogen atoms.

>> No.11759150

nice
>SpaceX has been given NASA approval to fly flight-proven Falcon 9 and Crew Dragon vehicles during Commercial Crew flights starting with Post-Certification Mission 2, per a modification to SpaceX's contract with NASA.
https://twitter.com/nextspaceflight/status/1268316718750814209

>> No.11759157

thicc

https://www.youtube.com/watch?v=___JNGJog0A

>> No.11759167

>>11759150
NASA's confidence in SpaceX has risen quite a bit thanks to recent launch of human crew.

>> No.11759177

>>11759150
>"flight proven" instead of "reused"
Note the language shift.

>> No.11759182

>>11759177
Yep. Languages matter for these meticulous contracts.

>> No.11759193

launch thread
>>11759183
shouldn't be as... crowded as the Demo-2 one. Regular Starlink launch with ratty-old booster.

>> No.11759196
File: 2.64 MB, 1280x720, extra_thicc.png [View same] [iqdb] [saucenao] [google]
11759196

>>11759157

>> No.11759198

>>11759150
Is this more so incase Boing fucks up again and SpaceX needs to pickup the slack? Not to mention the lower costs for more manned missions in the future.

>> No.11759205

>>11759157
I'd like a LARGE order!

>> No.11759212

>>11759198
No, its more of NASA giving SpaceX more trust in launching their Falcon9. Its the best vehicle in the US, and the flight proven vehicles can be launched again atleast 2-3 more times without issues. Any issues/ they do encounter will be mostly on their 5th-6th launches which will be done for internal Starlinks and addressed to so more of the flight proven vehicles can go to 10+ launches

>> No.11759225

>>11759212
I understand the falcon part, but the Crew Dragon was originally contracted for single manned then a cargo re-fit with NASA, by the looks of this alteration NASA is prepared to allow more manned Dragon flights using the same module or am I misreading the situation?

>> No.11759245

>>11759225
nobody knows

>> No.11759264

>>11759225
They've relaunched Cargo Dragon 10 times already. If anything, Crew Dragon is a much improved upon than Cargo Dragon, so they would have more confidence. They know SpaceX can already do Cargo capsule reused variants, so if there's nothing amiss in their findings for Crew Dragons, they'll place their trust in flight proven Crew Dragons.

>> No.11759265

>>11756691
That was Korean airplane

>> No.11759307
File: 59 KB, 613x1024, 3CE96D79-6C27-4AEC-8BDF-7264E26C1D8D.jpg [View same] [iqdb] [saucenao] [google]
11759307

>>11759150
So why is NASA suddenly more accepting with SpaceX. For a long time it seemed that their golden child was Boeing/Lockheed and suddenly they switch out to SpaceX.

It went from
>Boeing gets a contract billions of dollars bigger than SpaceX

To suddenly (in order)

>NASA puts Starship as a possible launcher for LUVOIR
> NASA gives SpaceX the Dragon XL contract
>SpaceX wins the Artemis Contract
>NASA allows Crew dragon to be Reused

>> No.11759317

>>11759307
Starliner's test flight mess up happened. Earlier, Boeing was seen as the more expensive, but trusted option, but Starliner crashed that notion with no survivors on live TV.

>> No.11759330

>>11758640
Could be worse. They could have demonstrated extreme incompetence to the point of corruption resulting firstly in the deaths of hundreds of people, and secondly in a humiliating loss of historic proportions in a competition with a vastly smaller and less well resourced competitor. SpaceX really are not the American aerospace company you need to be concerned about.

>> No.11759333

>>11759307
People were so pissed when Jim was hired but he’s so fucking great for NASA. He’s open to change and is willing to put so much time and effort into the little guys like SpaceX. I couldn’t tell you one thing Charles Bolden has said or done at his time at NASA... Jim on the other hand has been so involved and people don’t dislike him anymore because of his political affiliations

>> No.11759337

>>11759307
Boeing had its chance for over 10 years and then they decided to blow it by penny pinching.

>> No.11759343

>>11759333
>People were so pissed when Jim was hired
Source?

>> No.11759345

If the marginal cost of a reused Falcon 9 booster plus a reused Crew Dragon is 20 million per launch and they fill all seven seats, we could see trips to orbit for as low as 3 million dollars, depending on how big of a markup SpaceX wants.

>> No.11759349

>>11759345
crew dragon costs a shitton though

>> No.11759351

>>11759150
NASA must be really happy with SpaceX, i thought they would test the return of Endeavour before going forward with anything else that wasn't in the plans already

>> No.11759365

>>11759351
the conspiracist in me is thinking that the NASA bois are thinking
>hehehe now we can blame it on the re-used capsule if it blows up and kills the crew
But it's 100% just the engineers looked at the data and everything seems to be fine after a flight-cycle's wear-n'-tear

>> No.11759366
File: 177 KB, 378x344, starship stand.png [View same] [iqdb] [saucenao] [google]
11759366

New Starship stand almost in position, they will need to wire and test but at this rate we might see SN5 positioned by next week.

>> No.11759367

>>11759343
At least twitter was. I only use twitter to follow space stuff but there’s obviously a high concentration of liberals. Trump appointed Jim (republican/climate change denier) and people were fucking pissed (not to mention he replaced a black guy so it’s not good for optics)
Jim has since come around, changing his view on climate change. As the leader of NASA he convinces trump to put money into earth-observation missions, which republicans typically want defunded, and he serves as a great liaison for working with Trump/the Senate for selling Artemis, commercial crew, etc. and securing its funding

>> No.11759374

>>11759349
I imagine that Crew Dragon was already paid for by what they charged NASA and the funding they got from the commercial crew program. Maybe NASA could get the first few uses and then the rest they could sell to private customers.

>> No.11759382

>>11759349
Do we know anything about the internal cost of Crew Dragon? NASA pays a shitton, but all NASA missions are overpriced.

>> No.11759383

>>11758663
why the fuck is this a webm

>> No.11759385 [DELETED] 
File: 853 KB, 944x1257, arbys torched minneapolis price.jpg [View same] [iqdb] [saucenao] [google]
11759385

>>11759367
>(not to mention he replaced a black guy so it’s not good for optics)
Fuck optics and fuck niggers. After this week they can all burn together.

>> No.11759386

>>11759383
Why do you hate America?

>> No.11759388

>>11759367
yeah I remember those really early Jim open forum Q&A's with NASA staff etc. Hiiiiigh tensions.
Also check out Jim's old hobby https://www.youtube.com/watch?v=JEPr3DRUS7Y

>> No.11759400
File: 435 KB, 1087x1600, 10093F78-FC71-45A6-9D23-7140BDEED8E0.jpg [View same] [iqdb] [saucenao] [google]
11759400

>>11759366
What the fuck it’s almost done. I thought it An Heroed a week ago

>> No.11759405

>>11759400
That was SN4.

>> No.11759411 [DELETED] 

>>11758696
>Starship is a spaceplane
No, at no point does it fly like a plane
It reenters doing a belly flop, and then after slowing to subsonic speeds it does a backflip and lands propulsively like a rocket.

>> No.11759416

1 more hour till Starlink launch livestream (spacex)

>> No.11759418

>>11759400
this will be the fifth time they have built it, and they have become exceedingly efficient at it

>> No.11759423

>>11759388
KSP realism overhaul

>> No.11759430
File: 2.56 MB, 5568x3712, DSC_5371 (2).jpg [View same] [iqdb] [saucenao] [google]
11759430

new quick-disconnects?

>> No.11759435

>>11759430
>and as you can see these upgraded shower units have steel doors instead of wood
ELON NOOOOOOO

>> No.11759439

>>11759400
SN4 did, apparently a quick disconnect test didn't work properly so it spilled a load of methane and igniter fluids so it blew up, they have SN5 pretty much built and ready and SN6 under construction though.

>> No.11759450
File: 3.77 MB, 5505x3617, DSC_5242 (2).jpg [View same] [iqdb] [saucenao] [google]
11759450

>>11759439
Plus SN7 bits have been spotted. I'd imagine SN8 initial components are laid out in a tent too.
Pic is SN6.

>> No.11759462

>>11759430
It looks like it.

>> No.11759474 [DELETED] 

>>11758819
>So Starship is a spaceplane right?
no

>> No.11759481 [DELETED] 

>>11759058
chicago pile

>> No.11759492

>>11758819
No, vehicles like Buran, the SS and Skylon, Hermes and MAKS are all what I'd classify as "Rocket Planes". They are aircraft which happen to have rocket propulsion systems. Venturestar and Starship as well as the now defunct BFR are more in the realm of what I'd classify as "Finned Rockets", they are primarily rockets which happen to have aerodynamic control surfaces. The ITS concept didn't even have aerodynamic control fins, it's just somewhat aerodynamically shaped.
The distinction is arbitrary and mostly has to do with what the intent for the vehicle really is, whether it's meant to fly like a plane or bodyslam like a capsule or missile.

>> No.11759528

>still no JWST operational data transfer rates up on the chinese document fences

>> No.11759536

Starlink T MINUS 15 MIN

>> No.11759539

>>11759536
thread here if you missed it
>>11759193

>> No.11759558

https://www.youtube.com/watch?v=y4xBFHjkUvw

LIVE!!!

>> No.11759564

8 MIN 25 SECS TO LAUNCH

>> No.11759598

>was ready to go to bed
>clicked on youtube just out of habit
>get to see a launch before bed
neat

>> No.11759637

OOOAUGH I'M LAUOOOOOOOOOOONCHING

>> No.11759697

>>11758256
See I read one of those studies, specifically the methodology section
They used a machine learning system to find original word combinations in published papers and found that diversity increases this factor.

However, this was data collection carried out by AI, and the metric used is obviously shit; there was no consideration of the number of citations those papers received.

>> No.11759734

NICE

>> No.11759752 [DELETED] 

successful landing successful mission easy peasy
Nothing's easier than space

>> No.11759765

>>11758898
>>11758884
Would it have worked?

Also spacex just landed a booster for the 5th time.

>> No.11759767

>>11759697
Unfortunately due to the ABSOLUTE STATE of academe, most papers will never be cited or rigorously peer reviewed. Good science with sound methodology and accurate results will go unnoticed while schlock gets circulated around like gospel, the review process has been so badly corrupted by agenda that I can't take it seriously anymore.

>> No.11759776

It's the first F9 to land 5 times

>> No.11759825

>>11759776
Can't wait for 6th launch/landing

>> No.11759836

Does anyone have the webm of the falcon9 landing almost sideways on the barge?

>> No.11759852

>>11759307
>So why is NASA suddenly more accepting with SpaceX.
What has Boeing done recently that isn't a complete embarrassment?

>> No.11759860
File: 2.89 MB, 1280x720, Falcon9_barge_landing.webm [View same] [iqdb] [saucenao] [google]
11759860

>>11759836
This one?

>> No.11759887

>>11759860
Yes. Thanks!

>> No.11759925
File: 165 KB, 750x1072, 9903B151-B4B6-4A02-A26C-A511DEB7A5D5.jpg [View same] [iqdb] [saucenao] [google]
11759925

>>11759852
Post YFW your largest contracter goes full retard and suddenly the small guy lead by a weeb is paving the way in spaceflight

>> No.11759930

>>11757697
>the only other Falcon worthy of space

>> No.11759933

>>11759411
it reenters like the shuttle, it has significant AoA for hypersonic lift during reentry
it doesn't do the skydiver bellyflop shit until it's merely supersonic

>> No.11759936
File: 1.23 MB, 1400x1012, 1590928049624.jpg [View same] [iqdb] [saucenao] [google]
11759936

>>11759925

>> No.11759939

>>11759474
yes

>> No.11759941

>>11759492
all reentries are bodyslams

>> No.11759946
File: 9 KB, 259x194, Boeing's humble pie.jpg [View same] [iqdb] [saucenao] [google]
11759946

>>11759925

>> No.11759949
File: 929 KB, 1160x995, happy_elon.png [View same] [iqdb] [saucenao] [google]
11759949

>>11759925

>> No.11759951

>>11759150
This happening before the capsule returns genuinely concerns me. I would at least want them to inspect a returned capsule at least once. I know they've worked with cargo, but it's not the same vehicle.

>> No.11759952

>>11759936
It's interesting, you could actually do an Apollo style moon shot using Crew Dragon and already existing Superdraco thrusters. Without vacuum nozzles they have slightly worse ISP than the CSM, but much higher thrust. Slap some vacuum bells on them, add an SM with spare propellant, power, etc and with a Falcon Heavy and DM2 style launch you could use the existing capsule and rockets to fly to the moon. A lander would have to be designed but it could also use "vacuum" superdracos.

>> No.11759954

>>11759951
Demo-1 was inspected after return. It's the same as any other Crew dragon
>and then the debris was inspected again :^)

>> No.11759960

>>11759952
A SpaceX lander would probably be really aesthetic

>> No.11759961

>>11759008
NAZI SYMPATHIZER
#BURNBRAUNTOWN

>> No.11759968 [DELETED] 

>>11759939


fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you

fuck you fuck you fuck
you fuck you fuck you
fuck you fuck
you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck
you fuck you fuck you fuck you fuck you fuck you fuck you fuck you
fuck you fuck you fuck you fuck you fuck you fuck you
fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck
you fuck you fuck you fuck you fuck you fuck you fuck you
fuck
you

fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you fuck you

>> No.11759969 [DELETED] 

>>11759968
well shit, guess what the clump of 'fuck you's used to spell

>> No.11759971

>>11759969
is it (you)

>> No.11759975

>>11759960
100% elon would make a moon lander UFO shaped

>> No.11759976 [DELETED] 

>>11759971
try again

>> No.11759977

>>11759975
anon, we know what his moon lander looks like
it's Starship

>> No.11759980

>>11759952
>A lander would have to be designed but it could also use "vacuum" superdracos.
You could call the payload Double Dragon.

>> No.11759986

>>11759980
>lands on drone ship Bimmy&Jimmy

>> No.11759994

>fairing cam
What a farce

>> No.11760026

>>11759307
Jim.

>> No.11760071

Wouldn’t rockets be more powerful if they had vague impulse instead of specific impulse? I did some napkin calculations earlier and I think if you modified the Apollo spacecraft to use vague impulse instead of specific impulse, you could get enough delta/v to reach Neptune

>> No.11760075

>>11760071
yeah but reality is specific, not vague
your vague impulse rocket is only good on paper

>> No.11760078
File: 95 KB, 758x692, 1551873321888.jpg [View same] [iqdb] [saucenao] [google]
11760078

>>11760075
>>11760071

>> No.11760081

>>11760075
>yeah but reality is specific, not vague

Wattabout the Heisenberg uncertainty principle and shit

>> No.11760084

>>11760081
quantum effects that aren't relevant on a macro scale

>> No.11760092
File: 993 KB, 1200x600, index.php.gif [View same] [iqdb] [saucenao] [google]
11760092

STARLINK
SOON

>> No.11760097
File: 58 KB, 1237x556, 2.png [View same] [iqdb] [saucenao] [google]
11760097

Rocket launch per countries:

>> No.11760100

>>11760097
>failures 1
Starliner?

>> No.11760101
File: 73 KB, 1224x648, 1.png [View same] [iqdb] [saucenao] [google]
11760101

>>11760097
By family:

>> No.11760104

>>11760100
LauncherOne

>> No.11760105

>>11760101
oh fuck, Launcher One was an orbital launch attempt
I forgot about that

>> No.11760106

>first time reusing a booster 5 times
are they going to make it to 10 reuses like Musk originally wanted? Or is this the max?

>> No.11760107

>>11760101
please break out the different Long March rockets by type
they name all of their rockets Long March, that's like calling the Saturn I, Saturn IB, and Saturn V the same rocket

>> No.11760114

>>11760106
they're going to try

>> No.11760115

>>11760107
Saturn I was identical to Saturn V except for the paint

>> No.11760119

>>11760115
it's like calling the Titan I, II, and III the same rocket
or all the different types of Titan III where more than 50% of the rocket by mass was solid rocket booster

>> No.11760124

if you want a refresher as to why we need humans on the surface of Mars:
https://www.dlr.de/blogs/en/all-blog-posts/The-InSight-mission-logbook.aspx

>> No.11760126

>>11759366
Good maybe they can catch up to a hop soon

>> No.11760134 [DELETED] 

>>11759385
Yeah I'll never forgive them either. Plus optics shouldn't matter, especially when the black man being replaced was absolute garbage

>> No.11760135

>>11760124
We need humans on Mars because, if humans aren’t going to live on Mars, there is no point whatsoever in exploring it at all.
Resources are to be exploited.
Territory, conquered.

>> No.11760139 [DELETED] 

>>11760115
lmao

>> No.11760141

HULLO TIME
https://youtu.be/HGICHa1IZKo

>> No.11760150

>>11760134
Stop blaming all black people for riots

>> No.11760153

>>11760150
Given that a third of black men will be convicted of crimes and incarcerated in their lifetime I absolutely can.

>> No.11760156

>>11760153
wrong

>> No.11760158

>>11759418
kek

>> No.11760162

>>11760153
Even if that were true, how is 33% of 50% of black people “all black people”?

>> No.11760163

>>11760153
that's just throwing half of all black men under the bus, anon

>> No.11760165

>>11760124
Don't get me wrong, the rovers and science equipment we sent were incredibly impressive but holy hell the resources we put into those missions instead of just sending men.

>> No.11760166

>>11759008
I'm ashamed to say that I'd like to see this.

>> No.11760167

>>11760150
Why? They are the ones rioting in my city

>> No.11760169
File: 542 KB, 750x903, 3764917E-8DAC-495F-AB8B-1072456831AE.jpg [View same] [iqdb] [saucenao] [google]
11760169

>>11760153
All races need to get their shit together. Current events have gone to show the pure amounts of trash that come from all races. At least these people will be left behind as we explore our solar system in the future. The rest can rot here on Earth bc they’ll never strive for greatness.

>> No.11760175 [DELETED] 

>>11760162
>>11760163
The bottom third of their IQ distribution is potato tier. They're so incompetent the US military can't find anything productive for them to do, even pushing a mop or holding a gun. The middle third are the prolific criminals. The top third try their best, but regression to the mean often makes their children criminals, and so it is better if they do not reproduce at all. The world would be better off if their subspecies were extinct.

>> No.11760185

>>11760166
why ashamed? Braun did incredible things for us. Also i think it should be Braunburg or new braun or something like that

>> No.11760190

>>11760169
>All races
Oh shut the fuck up

>> No.11760194

>>11760190
What are you implying retard

>> No.11760205

>>11760190
Hey, let it be a meritocracy, we'll see who gets off the Earth by their own merits.

>> No.11760207

>>11760071
>trying to invoke bistromathematics

>> No.11760210

>>11760092
Gonna run out of colors soon.

>> No.11760212

>>11760194
I'm implying that our issues are never going to be resolved if we keep ignoring the obvious.

>> No.11760214

>>11760205
Unfortunately with our current system they would never allow that

>> No.11760216

>>11760212
They won’t be necessarily resolved so much as superseded and rendered irrelevant. No one’ll give a shit about racism when there’s gene modding and cybernetics.

>> No.11760228 [DELETED] 

>>11760150
I do and i will never forgive them either. They ruined the lives of a lot of people i know.

>> No.11760238

>>11760228
That’s your problem for making a fallacy of composition, then.

>> No.11760243
File: 22 KB, 236x368, eugenics.jpg [View same] [iqdb] [saucenao] [google]
11760243

>>11760228
Don't pit it all on one race anon. I know the world isn't a hippy kumbaya like liberal college girls post about on their instagram stories, but the problem won't be alleviated by hating them.
I personally know dozens of white girls who posted those black squares, but where looting downtown and destroying businesses and lives. The problem is trashy assholes who look down on STEM majors as "nerds". These people are the real fucking problem, and they are black, white, every fucking race.

>> No.11760251

>>11760216
Not any time soon, there is a cultural issue with one group of people that hasn't assimilated or grown to be successful in the US. Until we address that cultural issue we won't change.

>> No.11760252

>>11760243
>they are black, white, every fucking race.
outside of a handful leftist whites the riots are all black. Ignore it if you want but i wont.

>> No.11760254

>>11760238
how?

>> No.11760266

Damn I guess I derailed the conversation a bit so I’ll try to get us back on track but keep the theme going. Pretty soon we’re going back to the Moon (and Mars). Although plans haven’t been announced yet, to my knowledge, I feel like NASA is purposefully going to make the first person back to the Moon and first person on Mars a woman- possibly a woman of color. How do y’all feel about this

>> No.11760283

>>11760266
Why would anyone care? They have to be exceptional to be a goddamn astronaut and it’ll increase interest in the field amongst the relevant minority. Mae Jemisom was big cute in that orange suit

>> No.11760286

>>11760254
Blacks rioting = blacks in general is a fallacy of composition. What is true of part of a whole is not necessarily true of the whole.

>> No.11760288
File: 33 KB, 345x545, 57FD3D72-45D1-44B2-BFE6-C1EE224C1ED3.jpg [View same] [iqdb] [saucenao] [google]
11760288

>>11760283
Great point I don’t disagree. If they made it then they are truly equal to all other astronauts in my eyes. Also Anna Lee Fisher is a hottie

>> No.11760296

>>11760286
even IF that part of a whole is a fairly large part

>> No.11760308

>both fairings missed
welp

>> No.11760314
File: 2.31 MB, 1125x2436, CBE4D730-5C31-4C4B-B331-5972E861A173.png [View same] [iqdb] [saucenao] [google]
11760314

>>11760266
I may be conservative but I really don’t care. As long as they’re a great astronaut and representative of the American way, go ahead.

>>11760296
All of my black friends support BLM. They don’t support the rioting, but they’re all big on the whole “BLACK LIVES MATTER!” Thing. Even my best friend and my girlfriend (Who are both black). Take from that what you will.

>> No.11760336

>>11760286
Its a large part anon and it happens really frequently

>> No.11760339

>>11760336
good thing I don't ever have to interact with those people

>> No.11760340

>>11760314
>All of my black friends support BLM
then they support the riots.
>but I really don’t care. As long as they’re a great astronaut and representative of the American way
I agree however if they make both of them women and one of them black it will be very obvious why they did it.

>> No.11760343

>>11760339
good for you, the rest of us do.

>> No.11760344

>>11760340
>then they support the riots.
retard

>> No.11760346

>>11760340
are you hating on my man Melvin

>> No.11760352

>>11760344
Blm has been behind the riots of many different cases. They use the same tactics as the black panthers and they are violent at heart.

>> No.11760369

>>11760344
>Black live matter n shieet nigga
>Robs you
>Burns down your business
>Ayo we dindu nuffin it was dem whitey antifa

>> No.11760376

>On Wednesday, SpaceX President and COO Gwynne Shotwell congratulated employees on the launch in an internal email, while also acknowledging the tragedy of racism and police brutality.
>“In speaking of trying to attain a better future, we must acknowledge the current reality. The death of George Floyd, Ahmaud Arbery, Breonna Taylor and so many more highlight the difficulties that communities of color face,” she wrote.
>"I want to ensure that SpaceX is a place where these difficulties are recognized and certainly a place where bias and discrimination are not tolerated. I will be meeting with our African American employees this week so that we can have more in-depth conversations about their experiences at work and discuss what we can do to improve.”
https://www.cnbc.com/2020/06/03/spacex-gwynne-shotwell-email-to-employees-about-demo-2-george-floyd.html

This is the virtue signaling that never ends. Yes, it goes on and on, my friends. Some people started signaling, not knowing what it was, and they'll continue signaling forever just because...

>> No.11760379

>>11760376
Its just signalling though, fortunately they aren't mandating diversity hires. Just for show while male aryan engineers get shit done.

>> No.11760381

>>11760376
>Grrr stop saying racism bad

>> No.11760385

>>11760376
If I got an email saying “we need all black employees to attend a meeting so our white woman can talk to us about inequality” I would fucking quit. This shit is so dumb and has no place on space. Just be egalitarian, don’t discriminate based off of melanin in the skin, and don’t fucking virtue signal like you’re some sort of white savior and/or some idiot filled with white guilt

>> No.11760389

>>11760376
>be shy black nerd
>grow up wanting to build rocket ships
>finish college in the prime years for the birth of private spaceflight, land a dream job at SpaceX, the industry leader
>some who steps on a what now in a flyover state and now one morning when you thought you were going to work on microcontrollers instead you get taken to a special room with HR and they talk to you about what it's like to be black and what they can do to not make you go caveman crazy

it's all so tiresome

>> No.11760399

>>11760389
Exactly

>> No.11760416

>>11760389
Klingon problems

>> No.11760423

>>11760389
>well, you could not single me out for a time-wasting meeting
>I have deadlines to make, you know

>> No.11760426

>>11760423
hopefully, by being a company of engineers they'll largely see the unproductiveness of the meetings and wrap them up quickly before going back to the real work

>> No.11760434
File: 282 KB, 1320x2048, EZoZgCzXsAE9ddz-orig.jpg [View same] [iqdb] [saucenao] [google]
11760434

There's "Vanilla" hentai in one of those comic koh anthologies from early this year which last page show a massive meteor seconds to wipe everything/kill all and the couples featured in it go to the beach

>> No.11760437

>>11760434
well captcha screwed me over, kek, anyway, picture reminds me of that (couldn't find it) from EDA's twitter.

>> No.11760438

>>11760434
What passes for “vanilla” in a dying culture as degenerate as Japan?

>> No.11760441

>>11760438
Seppuku

>> No.11760480
File: 18 KB, 489x857, 1590578161094.jpg [View same] [iqdb] [saucenao] [google]
11760480

>the home of both Blue Origin and Boing! is on fire tonight

>> No.11760488

>>11759212
Anon, the only problem they encountered so far was caused by an improper maintenance procedure.
They haven‘t generally shown to have problems with 4 or 5 reflights. They are just cautious. Reflying boosters is still such a young technology. They need to make sure the boosters don‘t wear and fatigue in unexpected ways.

>> No.11760489

>>11759307
Our memes are getting through to them.

>> No.11760492
File: 1.47 MB, 300x400, Musk THRUST.gif [View same] [iqdb] [saucenao] [google]
11760492

>>11760480

>> No.11760499
File: 84 KB, 605x485, file.png [View same] [iqdb] [saucenao] [google]
11760499

thanks, Eric

>> No.11760502

Any idea what the BE-4’s specific impulse is? Looks like a badass engine

>> No.11760509

>>11759317
Imagine squandering decades of goodwill in one single clusterfuck of a testflight.
>oh, we just checked after those mission timer/thruster and comms failure and turns out there‘s also a 100% chance the vehicle will destroy itself on the regular mission path. Whoops. Let‘s patch that real quick. See it worked. Only another parachute failure after that. Who needs safety margins anyway. Wait, what do you mean we need to fly it again?

>> No.11760510

>>11760502
Zero because it hadn't fucking flown yet.

>> No.11760515

>>11760510
Yeah but they’ve test-fired her

>> No.11760516

>>11760499
Wrecked

>> No.11760521

>>11760502
340 something probably

>> No.11760525

>>11760521
It’s methalox

>> No.11760526

>>11760525
yeah? Raptor is 350 something at sea level

>> No.11760530
File: 76 KB, 1024x576, Engine-comparison-1-1024x576.jpg [View same] [iqdb] [saucenao] [google]
11760530

>>11760502
>>11760521
>>11760526

>> No.11760531

>>11759382
Elon recently said Crew Dragon is still too expensive for a real commercial market to spring up around it. Which makes sense because they‘re building Starship instead.

>> No.11760538

>>11756407
fpbp

>> No.11760539

>>11759439
Why didn‘t they do that with nitrogen?
Get it together, SpaceX. Don‘t spill methane under your fueled prototype while testing ground equipment.

>> No.11760540

>>11760531
Isn’t crew dragon basically just a filler vehicle to complete the human space flight contract? I’m no expert but I believe the only reasoning behind it was to secure a contract with NASA to build trust, compete with other companies like boeing (which got btfo bc they were able to return Americans to space after shuttle), and basically just be used as a tool to impress Jim?
I mean remember those 2 millionaires who bought seats on dragon 2? They’re probably flying on Starship instead. SpaceX sees starship as the future for ISS, the Moon, and beyond- as well as viable space tourism

>> No.11760568

>>11760530
oh, those were the vac numbers for the sea level engine
my bad

>> No.11760585

>>11760097
>country
>europe

>> No.11760587

>>11760106
They‘ll just keep going on their starlink mission until one fails.

>> No.11760613

>>11760540
yeah Elon has said a few times that Starship will make obsolete every configuration of Falcon 9, Falcon Heavy and Dragon.
Once it's operational, it can pretty much do everything launch and space related for the next several years, probably even decade as literally everyone else will scramble to copy it somehow

>> No.11760637

>>11760539
They probably did before without anyone unrelated even noticing. The vibration from the test fire might've jammed some valve or dislodged a seal this time.

>> No.11760641

>>11760613
>probably even decade as literally everyone else will scramble to copy it somehow
Everyone but Blue Origin has a massive uphill battle to even get Falcon 9 tier reusability and capacity, and there's lots of special material science sauce in the Raptor. It could be 20 years.

>> No.11760671

>>11760641
Closest analog I can think of is the Ford Model T for rockets. Pretty crazy how we've already had multiple static fires of some test articles, it won't be long now before we start to get some real hops going.

>> No.11760685

>>11760613
Starship is truly insane. I know spacex isn’t small by any means as it is now, but I imagine the name “Starship” will be a household name in a decade or two. If they can figure out a way to refuel it easily once in orbit (i.e. establish refueling posts) it might honestly corner the market in space travel and payload delivery. I might be too optimistic but it’s too big to fail. Not in a bad sense like SLS, but in a good sense in that it is such a good concept.

>> No.11760688

>>11760685
>establish refueling posts
depots don't magically teleport fuel up to themselves, it's less efficient than just refueling the payload vehicle or a tanker for ever mission that requires it

>> No.11760695

>>11760671
>>11760641
it is pretty incredible when you think about it.

>> No.11760702

>>11760688
Oh of course. I keep seeing people talk about how it will require 6-8 launches just to fully refuel it? Where are they getting this from... in my head it could launch to LEO and would only need 1 tanker launch to refuel it
Also with regard to refueling stations, that would be something more feasible in the future. There are talks of using things such as captured asteroids and mineral mining to establish in-orbit posts.

>> No.11760706

>>11760702
150 tons of payload to LEO
1200 tons of fuel in the upper stage
1200/150, anon

>> No.11760710

>>11759961
What? Don't you want to go to Brauntown and fly the methane rockets?

>> No.11760712

>>11760688
Well it would probably be cheaper to fuel depots for long haul ships and keep gateway like systems for landing

>> No.11760714

>>11760712
excuse me?

>> No.11760729

>>11760714
you heard me

>> No.11760732

>>11760729
speak English, motherfucker

>> No.11760742

>>11760706
Damn I’m so dumb that was such an obvious answer right in front of me. I feel like that’s so unfeasible. Surely you don’t have to refuel it to max capacity though right? Eight damn launches....
And I guess i’m stubborn because I’m a geologyfag who just finished a course in resource mining and space refueling, but I feel like having a reservoir of fuel waiting in orbit would be better once you get in an economic situation to build it. Idk how the fuck you could assemble a depot that big though other than just connecting multiple starships together in orbit and build up like the ISS- but at that point it feels like a waste bc you’ve already done the launches (unless you’re mining the raw material on the moon and just putting it into local lunar orbit). But then you still need to refuel just to get to the moon. I’m just rambling now so I’ll let Elon figure the details out

>> No.11760750

>>11760742
I don't think you need to fill it to full in order to max out the Mars downmass payload

>> No.11760784

>>11760499
>b*rger btfos the depot king

Bueno

>> No.11760787
File: 1.27 MB, 2359x1749, 1590867508075.png [View same] [iqdb] [saucenao] [google]
11760787

Page 10 incoming.
Red alert, Baker on battle station.
I repeat, Baker on battle station.
Prepare to launch new bread.

>> No.11760789
File: 29 KB, 400x299, sunshade.jpg [View same] [iqdb] [saucenao] [google]
11760789

Fuel depots in space are gonna be better because they can be made to have practically zero boil off, which is why it will make sense to have a dedicated orbital depot. No point in putting the required materials on a Starship fuel tanker, you'd just be lugging that up and down the gravity well every time you launched.
Not to mention the ease of scheduling, until they have dozens of launch pads it's gonne be somewhat of a turn around for each flight

>> No.11760790

>>11760787
use this image
>>11760092
>>11760092

>> No.11760796

>>11760789
>Fuel depots in space are gonna be better because they can be made to have practically zero boil off

I suppose so. It makes sense to have tanker Starships fill up a fuel depot so that one intended to be sent further out can refuel in one go

>> No.11760807

>>11760789
you don't need special equipment to prevent methalox from boiling off in orbit, anon
just a simple active radiator cooling your props should do it

>> No.11760809

>>11760796
>>11760789
The problem is you still have to beat that gravity well just to get ships up there to fuel it in the first place. Perhaps we can see an LEO fuel depot/small space station so there’s actually a reason to build it and launch tankers to it. It could be smaller and give you enough fuel to get to the moon. Then there could be one on the moon that utilizes raw materials there with dedicated mining and refueling starships. But at that point you need to do LEO>Refuel>Moon>Refuel>Mars which is an equal waste of time, and a waste of space

>> No.11760816

>>11760530
Why does the RS-25 have such a large difference between SL and Vac ISP compared to hydrocarbon engines? Same with the RS-68 (365 SL & 420 Vac)
What is it about hydrolox that gives them such shit SL Isp compared to their vac ISP?

>> No.11760825

>>11760816
>Why does the RS-25 have such a large difference between SL and Vac ISP compared to hydrocarbon engines?

Lower density of the propellant compared to the atmospheric density I’m guessing

>> No.11760828

>>11760816
>>11760825
they're heavily overexpanded, just like the J-2
basically vacuum engines that can run at sea level without exploding
the current plan of record for the Raptor Vacuum will be similar

>> No.11760835

>>11760732
learn to read

>> No.11760863

>>11760712
Clarify this, I have no idea what you’re trying to say

>> No.11760873

>>11760530
I just can't get past the TWR on Merlin, it's fucking ridiculous compared to the rest.

>> No.11760874

>>11760873
it's almost like nobody else was even trying

>> No.11760875

>>11760863
He's trying to say it would be cheaper to run fuel to fuel depots and have large long haul ships use them in space while you use a gateway system(like the one in the artemis plans) with landers to get down to the planet. I kind of agree but i think that won't be in our lifetime

>> No.11760879

>>11760874
I know it's primarily because they're using extremely cooled down propellants so they can squeeze more through the combustion chamber. People should really stop chasing that fucking hydrolox ISP at sea level. It's a god damn shackle getting us nowhere.

>> No.11760883

>>11760875
Ahh I see. I mean why do that though if your starship can refuel, make its way to the moon (for example), and completely skip the shitty expensive gateway and just be it’s own lander?

>> No.11760886

>>11760879
What’s a better alternative, RP1 or Methalox

>> No.11760891

>>11760883
Well for now gateway is a political tool. But when we get better at space, eventually our ships are going to be too big to practically launch from atmosphere. So a gateway system is like taking a rowboat to shore after you anchor the main vessel.

>> No.11760894

>>11760886
Both will do. Anything as long as it's not hydrolox.
If you take the Raptor, it has a far better Isp than the Merlin. It doesn't have to lug around a humongous tank and use solid rocket boosters as training wheels to get off the ground.

>> No.11760896

>>11760875
>Not living forever

Pleb

>> No.11760914

>>11760896
based
I'd be surprised if we don't make significant progress in slowing or stopping aging in this century.
It's actually my main motivation for getting /fit/, I don't want to die from clogged arteries or some shit in 50 years when I could potentially live several orders of magnitude longer than that.

>> No.11760918

>>11760914
Imagine dying a year before they invent anti-aging because you were a fat nasty bastard

>> No.11760948

>>11758879
no, starships are not sandwich breads, they are cakes

>> No.11760951
File: 135 KB, 1280x720, 1591266654646.jpg [View same] [iqdb] [saucenao] [google]
11760951

Starship de geso

>> No.11760953
File: 348 KB, 566x608, 1591267238470.png [View same] [iqdb] [saucenao] [google]
11760953

>> No.11760964

>>11760951
>>11760953
Watch out, you'll sumon the anime sperg

>> No.11760966

>>11760964
let him come

>> No.11760968

Human torpor when? I want to see starships crammed sardine/nigger slave style with a thousand sleeping cunts going to mars.

>> No.11760971

>>11760914
Its only going to be for bezos and his mates, plebs like you won't be able to afford it.

>> No.11760983

>>11760966
>>11760964
I have arrived

>> No.11760992

>>11760971
Yeah prices never drop for anything

>> No.11760999

>>11760992
Could you afford to pay for any substantial medical service out of your own pocket? Some real shit that will cost you a couple of hundred k? The treatment required for extended life or longevity or whatever is going to be way more complicated than that.

>> No.11761003

>>11760992
>have immortality treatments
>people need them on a regular basis
>charge enough to keep them permanently indebted for the rest of their lives

Amateur capitalist you are

>> No.11761027

>>11761003

Not him, but why do you think food, which is no less essential than life extension treatments, doesn't cost so much as to perpetually indebted people?

>> No.11761030

>>11761027
Why do you (((think)))?

>> No.11761280

>>11760968
https://academic.oup.com/biohorizons/article/doi/10.1093/biohorizons/hzy002/4969915

>> No.11761288

>>11760502
Less than Raptor, guaranteed.
Not because Raptor uses FFSC cycle instead of ORSC, though that would offer increased Isp if all other factors were the same. No, it's because Raptor has a MUCH higher chamber pressure, and chamber pressure directly correlates to both combustion efficiency and Isp.
We know that Raptor has a significantly higher chamber pressure because it produces over 80% the thrust of a BE-4 engine while only having ~47% the nozzle exit area. Raptor therefore has enough chamber pressure that if you scaled it up to the size of a BE-4, it would be producing ~4250 kN of thrust. Of course, it would be doing this by burning a greater mass of propellant per second, however as I mentioned having greater chamber pressure directly increases Isp, basically because it lets your exhaust expand more and achieve higher velocity through the nozzle. Fun fact, this is why rocket engines get less efficient when you throttle them down; you decrease chamber pressure when you throttle, which reduces the exhaust pressure differential through the nozzle, which reduces exhaust velocity and therefore Isp.

TL:DR; BE-4 Isp is less than Raptor's, so if Raptor (the sea level version) is getting ~330 Isp at sea level and ~355 in vacuum, BE-4 should be getting at most ~310 Isp at sea level and ~340 Isp in vacuum, once it actually flies of course (Isp figures for different altitudes don't decrease at the same rate since it's a matter of pressure differential, and sea level operation obviously impacts that; that's why NERVA, a very low pressure nuclear engine, was able to achieve a theoretical performance of ~900 Isp in vacuum but only about 1/8th of that Isp on the ground).

>> No.11761292

>>11760521
>340 something probably
No, except maybe in vacuum. At sea level though, no way. See >>11761288

>> No.11761307

>>11760742
>I feel like that’s so unfeasible.
Why? They think they can get the launch operations down to the point that the Booster can fly every four hours, meaning it'd be used to service a fleet of Starship vehicles, and they'd lob the entire refueling campaign in 32 hours. For Mars missions they don't need full propellant tanks to get maximum payload to Mars (max payload being constrained by how much mass they can physically land on Mars given their engine and the size of the header tanks, which itself is being defined by how much payload Starship Super Heavy can launch into Earth orbit), however they'll probably fill the tanks anyway because it'd let them get to Mars significantly faster, as in take a month or two off of the travel time. There's no way refueling could both be a viable option for getting Starship to Mars at all AND be expensive/difficult enough that they'd only do the minimum number of refueling flights for any mission. The economics work such that they'd either refuel to max capacity for any interplanetary mission to help reduce travel time, OR they'd simply not refuel Starship at all, because there's pretty much zero 'yellow' in between the red zone (refueling too expensive and hard) and the green zone (refueling cheap and easy enough to always be worth it).

>> No.11761312

>>11760789
>Fuel depots in space are gonna be better because they can be made to have practically zero boil off
We aren't working with hydrogen here, anon. SpaceX already expects minimal to zero boil-off of methalox propellant during month long trips to Mars and over a year sitting on the Martian surface. Also, the entire process from launching a Starship to having it fully refilled in orbit will probably only take days to weeks at most, not enough time for significant boil-off of methalox to occur even if they said fuck it and didn't have any active radiators. Finally, if they were getting significant boil-off (hundreds of kilograms per day from the main tanks), they could easily just eat that loss, since they're doing at least a Tanker flight per day and sending up ~150 tons of propellant each time.

>> No.11761332

>>11760828
RS-25 is highly over expanded at ~77:1, but RS-68 is not, at only ~21:1.

>>11760816
>>11760825 is close to correct. It's not the propellant density per say, but rather its low mass flow rate, which means the exhaust column has less momentum and literally can't push the atmosphere out of the way as easily as an engine that's spewing out carbon dioxide among other things.

Overall the difference between an engine's Isp at sea level vs in vacuum depends on chamber pressure, expansion ratio, and exhaust molecular mass, and all to varying degrees of importance. Like anything to do with the physics of rocket engines, shit's complex.

>> No.11761336

>>11760879
>I know it's primarily because they're using extremely cooled down propellants
It's actually not, though. Merlin 1D was shattering records before they ever started sub-cooling the propellants.

>> No.11761351

>>11760886
>>11760894
If you are looking purely at stage delta V performance, densified propalox is actually the ideal propellant. It has a bulk density of about 98% that of kerolox, but has efficiency closer to methalox, and probably burns cleanly enough that you could use FFSC engines without having coking issues appear. If you aren't aware, bulk density is just the average density of the entire propellant volume of your stage, as if you finely mixed both your propellants (do not actually do this, you will have created the world's biggest high explosive and any little spark could make hundreds of tons of the mixture detonate instantly. Goodbye launch pad). The greater your bulk density, the better the propellant mass fraction of your vehicle, and the better your mass fraction at a given Isp the more delta V you get. Just like how densified methalox can get you more delta V than a typical hydrolox stage despite the latter's much better Isp, densified propalox can beat both densified methalox and densified kerolox, although not by as large a margin.

If you are at all concerned about minimizing propellant cost, methalox is the obvious choice. Of course, you really don't care about propellant cost unless your vehicle is so reusable that propellant cost actually matters, as will be the case for Starship.

>> No.11761356

>>11761351
Yeah, but methane is the obvious choice due to the simplicity of the molecule and how you can literally pull it out of nothing but hydrogen from water and CO2.

>> No.11761381

>>11760953
cute

>>11760968
Torpor ships and sleeper ships actually have much greater constraints on radiation shielding requirements, because slowing down or altogether stopping a person's metabolic processes means that by extension their normal DNA repair mechanisms cannot operate effectively or at all and therefore cannot repair the same level of damage produced by the dose received while in space.

It's exactly like how being dosed with 10 Sv over 30 years does basically nothing to you except increase your likelihood of developing cancer, but being dosed with 10 Sv over 30 minutes will 100% kill you. The relationship would be the direct inverse of how effective your hibernation technology is; if your astronauts only experience 1/100th the subjective time, they'd need 100x the radiation shielding. For this reason, slow cryogenic flights between stars are actually impossible, because even with perfect radiation shielding your body contains enough carbon 14 and potassium 40 and other radioisotopes that over the millennia in stasis the materials of your own body would dose you with enough radiation to kill you. You'd wake up on arrival, vomit, fall into a coma, and over the next few days or weeks pretty much rot away as your immune system completely stopped producing white blood cells and every tissue in your body experienced massive levels of cell death.

>> No.11761390

>>11760999
universal health care niggaaaaa

>>11761003
>charge enough to keep them permanently indebted for the rest of their lives
>Amateur capitalist you are
You're the amateur here, in reality a true capitalist would make the treatment just cheap enough that the majority of people could afford it, yet profitable enough to make that person a billionaire, and with those billions of dollars per year develop technologies to get space colonies mass producing space habitats. On the surface you'd be a pure humanitarian, in reality you're simply doing your best to expand the human population immensely because that directly expands your own quarterly gross.

>> No.11761399

>>11761356
Sure, if you care at all about ISRU methalox makes the most sense, since it's the second or third best thing after hydrolox in terms of Isp but vastly easier to store and for a reusable vehicle actually offers better performance overall.
If all you care about is raw performance though, for example if you were working at ESA, didn't care about reusability, and just wanted to max out the performance of a first stage booster, then sub-cooled propalox looks very attractive.

>> No.11761433
File: 373 KB, 859x465, lil hopper.png [View same] [iqdb] [saucenao] [google]
11761433

What are they doing to little hoppy?

>> No.11761439

>>11761433
Probably needs a new set of speakers.
And we need a new fucking thread before we drop into the black hole.

>> No.11761582

new >>11761581

>> No.11761587

>>11760873
First Merlin they had was really mediocre, then they optimized over/over again until we have this monster today.