/sci/ - Science & Math

He cute!

Hop today?

>>10495331
>ywn date a young elon musk

recycling general pics should be bannable

>>10495332
More likely a static fire, they've got two more days to do a hop.

>>10495327
Stop making these, you are cancer.

>the shill is still here
>he's still shitter shattered and always will be
at this point his impotent rage is just funny
he will never achieve anything, yet he still eats those hotpockets and stays her yet another day, from dawn to dusk to dawn once more

I rarely post in these threads you cancerous idiot.

You literally just made a post were you express sexual attraction to a teenage Elon Musk, like how sick are you? You should seriously seek help.

>>10495367
It's even more hilarious how he always claims it's not just him and that he is barely ever here despite all the posts being written in the exact same style, lul it's autistic as fuck.

I guess your boss didn't update you on the site you would be shilling on
This is 4chan, everyone is sick and deranged here, that's why we're here in the first place

additionally, we have archives here, we can go back and see all of your shitposts, and they're far far more frequent than you claim

So you are also literally paranoid. Good for you. You are still cancer and your threads suck.

>>10495327
You think she was hopping this weekend on Musk's BFR?

>>10495377
I don't see the issue, he was kind of dorky cute

>>10495377
A cute, I say!

>>10495398
n-not ready for launch. come back next week, this usually doesn't happen to me

>>>>10495360
Full flow has several advantages that have already been laid out, but the most significant ones are reduced turbopump stresses at a given chamber pressure compared to fuel rich or oxygen rich staged combustion, the lack of a complex moving seal to prevent either propellant from coming into contact with one another across the power shaft of the turbopumps, increased specific impulse, and increased maximum chamber pressure leading to a higher thrust engine at a given size (highly relevant if you are clustering many engines together for maximum thrust).

There do exist good engines that aren't full flow, obviously. The challenge of developing a full flow engine is balancing the thermodynamics of system all at once, developing a test stand that can supply a wide range of fluids at a wide range of temperatures and pressures to be able to individually test components of the engine, and to be able to come up with a final design that can be built without being hideously expensive.

>>10495460
Kek, Elon you smug bastard.

>>10495509
here are some numbers behind the "advantages" of full-flow and you shall see why nobody bothered to develop one

>>10495527
>A literal paper engine for a paper rocket

Compelling

>>10495539
Well, the RD-180 isn't a paper engine, the chamber pressure is similar to Raptor's, and it's nozzles are 1.4m and produce, 1.9MN thrust. So overall very similar, though Raptor still does a bit better, but consider that RD-180 is RP-1, and Raptors use the slightly more efficient liquid methane. If you account for that, there is practically no performance difference between these two.

>>10495558
Have we pretty much hit peak chemical rocket engine performance, then? Are there theoretical ways that we could get significant gains in specific impulse, without going to ridiculously dangerous fuels?

>>10495605
Aside from doing things like dumping extra hydrogen into the combustion chamber, not really.

>>10495605
There still are aerospike engines which are pretty promising and far away from being developed to their peak. Engines that can switch between airbreathing mode and rocket mode would also revolutionize space access. But as far as nozzled rocket engines go, yeah, hundreds of billions went into their development and not much can be improved anymore.

I'd say though good heat shielding technology is more important than better engines, in terms of quickly reusing the spacecrafts and drastically reducing launch costs.

>>10495617
Could higher chamber pressures help?

>>10495626
Yeah, I suppose improved heat shielding, re-usability, and lighter weight construction would all be higher priorities for affordable space travel at this point.

>>10495693
>Could higher chamber pressures help?

SpaceX is more or less at the limit for attainable chamber pressures. Metals don't remain resistant to hot oxygen forever.

>>10495695
what about materials in testing or development,, such as carbon fibre?

>Rocket Watcher: Boca Chica resident witnesses SpaceX growth
https://www.themonitor.com/2019/03/25/rocket-watcher-boca-chica-resident-witnesses-spacex-growth/

We hopping today?

>>10495707
At high enough pressures and temperatures nothing will stop superheated oxygen from burning the metal of the preburners/combustion chamber. Its just not going to happen.

>>10495749
we should if the wind isn't pure fuck

>>10495794
What's the launch window? Link to stream?

>>10495818
SpaceX aren't revealing details and I don't know who's on location right now

Starship cam
https://www.youtube.com/watch?v=L7zia2HqOOc

>>10495914
comon, launch you bitch.
I'm starved for esplosions.

It’s fixed to the ground, it can only hop like two inches btw

>>10495979
It can still esplode, right?

>>10496004
Yep

>>10495979
>not believing in the Heart of the machine being able to break free

since this isn’t McGregor, I wonder if they have all of the same sort of thrust plate instruments and such to get data back from SN 2? There are strain gauges on the legs, but that’s more for the hopper and not the raptor instrumentation

>>10496031
Engine looked packed with sensors.
But remember, it's a first, even for engine testing:
no trench, because it's supposed to launch from Mars. Meaning it might disintegrate from vibrations.
I don't think there's any record of testing an engine directly aimed at the ground.

>>10496056
Wait, I'm stupid, Grasshopper did it.

The spacex killer has arrived - Germany strikes back!
>https://spacenews.com/germany-begins-reusability-study-to-capture-rockets-in-midair-and-land-them-with-a-plane/

>>10496017
>I understood that reference

>>10496064
>In-Air capture maneuver.
Good luck with that.
SpaceX has been trying to catch fairings with a boat, and boats are much more maneuverable than planes.

>>10496064
>next-generation reusable first-stage [that could be] operational in 2035,” he said. “That’s a rough road map.”
>2035

wew

>>10496064
Germany at it again, doing its own thing.
They're supposed to into ITER and ArianeSpace.

>>10496064
this seems needlessly complicated. it'd be easier just to land it on a runway

You know, if I was Elon Musk, I would just happen to leak F9 plans to the world when Starship is flying.

>>10496086
His iq is definitely higher than 70.

>>10496086
even with a full TDP you can’t just start making them if you’re India or China or whatever. That takes a lot of effort.
I expect that spacex will instead invite companies to be coach builder equivalents for blank slate starships. So a country can “wet” it out for their own specific space station config

>>10496064
>>10496084
why don't they just parachute it down onto a giant bouncing castle?

>>10496094
>>10496095
Or you know, just open source the rocket for the lulz.
His goal is to get mankind into space, so why not.

>>10496099
ITAR, yo

>>10496096
I still can't stand the fact that we'll never get to see that.

>>10495509
why is a moving seal that big of a deal? Seals are used everywhere

>>10496101
Well, that's a risk worth taking, IMO.
We won't get there if there is no competition.

>>10496106
There is competition. attempting to share F9 with the world is stupid

>>10496062
Grasshopper never used an engine this big.

Hell, I dont think anyone's tried to fire an engine this big straight at the ground without something to redirect the energy away or absorb it.

>>10496114
>There is competition
Do you really think SpaceX can't just go and undercut any competition with a new launcher by now?
They're just making money while it lasts.
10% off a reused booster is a joke.

>>10496122
>10% off a reused booster is a joke.

So how do you know how much refurbishment is costing them?

>>10496122
new boosters should be the more expensive ones. They’re unproven after all

>>10496126
I know they would have already given up if it cost them 90% of a new one.
>>10496127
That only works if we start seeing 5+ flight cores.

>>10496127
*cheaper
I’m retarded

>>10496128
>I know they would have already given up if it cost them 90% of a new one

Second stage is expendable, you also still have to re-assemble the two stages and install the rocket on the launch pad. So even if they did 0 refurbishment I doubt they could save that much money on launches. However, they are definetely doing a lot of refurbishment. So 10% price discount sounds actually quite reasonable.

>>10496130
Somehow, my brain worked it out, and I only noticed after you posted a correction.
On this whole refurbishment thing, let's be honest, it's not like you absolutely have to launch the booster with same engines.
I guess they just swap them as they go through validation. For now.

>>10496134
see >>10496136
They're just grabbing moneys for Starship.

>>10496064
>can burn all the fuel in the rocket and glide it back, giving it an advantage over SpaceX
>oh wait, they strapped extra wings and avionics to it they need to launch, so I guess there goes that
>oh and it needs in-air capture
I mean, it's nice to see Europe looking into reusability, but I wonder why they have to take this convoluted approach when there's already a working solution you can see working in practice once per month.

>>10496134
It also seems reasonable that the cost of refurbishment will go down as technology improves.

>>10496064
>The project is called FALCon, or the “Formation flight for in-Air Launcher 1st stage Capturing demonstration.”
Are they taking the piss?

>>10496144
Yuprop is waking up to the fact that SpaceX stole their toy.
Don't get me wrong, I'm French. But they're 10 years too late.

>>10496139
What's with that post? Don't see a connection to mine.

Let's say booster manufacturing cost is 50% of overall launch cost (rest being manufacturing cost for second stage, launch preperations, installing the rocket on the launch pad, actual mission control, etc.). If they give 10% price discount on a reused booster (I'm not sure that's true, IIRC that was only true for the first few reflown boosters) this implies they are refurbishing the booster at 80% of the cost of manufacturing a new one.
However, this also just for the first reuse. The refurbishment that needs to be done increases with every launch, and is also depended on the flight profile. So it's definetely not easy to tell how much money SpaceX is saving by reusing boosters. I doubt it's that insanely much.

>>10495605
If metallic hydrogen proves to be metastable, it should be possible to burn a slush of that and get some ridiculous isp, up to 1700s

>>10496155
I'm talking how your picture of refurbishment is wrong.
It's all about the engines.
And my guess is they just test the engines after flight to find defects.

>>10496161
They most definetely do not swap out the engines after one use.

>>10496166
They don’t, but they do do static fires. That’s basically as good of a test as any

>>10496152
lol

>>10496166
Well that's an information only SX employees would have.
They're not numbered or anything, and you can't tell them from new ones on the launch pad.

>>10496155
>still giving it (You)s

>>10496096
party balloon > bouncy castle > > > trampoline

>>10496155
I'm curious what you think SpaceX does to refurbish its carbon fiber structure, because that's not a technology.

>>10496175
Think of the investors elon!

>>10496172
I assume as soon as they realize they need to swap out engines they stop reusing the boosters altogether.

>>10496188
Well, no. Just strap a new one on there.
Why ditch a capable booster?

>>10496193
Because manufacturing cost of an engine and installing it on the booster is most of the work. Maybe they do that in case only one or two engines are done by I highly doubt they swap out all engines every launch.

>>10496072
God damn oldspace is CRIPPLED by its slowness. Thats an insane amount of time to get that going, thats 16 years to make something thats marginally better maybe than what ol musky has now.

>>10496195
I'm sorry but no.
Your case would hold if F9 was a 1 or 2 engine rocket, but in this case, most of the cost goes to the carbon fiber outer tank, aka booster. Not the engines.

>>10496196
I almost puked, knowing my tax money will go to this nothing-burger in the next decade.

>>10496064
I think there is a critical step missing between "tow back" and "launch." How do you get the rocket on the ground??

>>10496198
What are you talking about? The booster is made out of Al-Li composite. The only carbon fibre in the Falcon 9 is the fairing.

>>10496207
It's a tank in a tank rocket.
F9 fuselage is carbon fiber.

>>10496196
I don't know now European politics works, but 16 years seems long enough for political winds to change. If that happens, then the project could get a soft reset allowing funding to keep going in while extending the deadlines.

>>10496209
No, it's not. Falcon 9 has no carbon fibre tanks.

>>10496211
RIP Hermes.
For you younglings, this was basically Siera Nevada's Dream chaser but two decades earlier.
Europe will never people into space.

>>10496218
Yeah, no.

>>10496218
Let's be precise.
Tanks ar AL-Li in a carbon fiber tube.

>>10496218 is correct, the only carbon fibre part of the F9 is it's pressure vessels. Both the body and tanks are made of aluminum.

>>10496229
No, they're not. If they were, an expandable rocket wouldn't cost only 60 million.

>>10496233
Just to be clear, the body is the tank.

>>10496233
>>10496234
>>10496236
I'm laughing at you. Such a rocket wouldn't able to land to begin with.
There has to be structural strength.

>>10496071
>boats are much more manoeuvrable than planes

>>10496219
I remember reading about that (Hermes was before me though). Is it me or does it seem like space planes are kryptonite to space agencies?

>>10496242
Wanna bet how much decades it will take them to catch a booster?

Hopper streams
https://www.youtube.com/watch?v=qJ6Cd9mfldI
https://www.youtube.com/watch?v=L7zia2HqOOc
https://www.youtube.com/watch?v=wUJDuwKriyw
https://www.youtube.com/watch?v=cOm4S8y59Hg

>>10496250
is it hopping yet?

>>10496241
https://www.youtube.com/watch?v=vrR31nHCV-U

>>10496244
It just bad luck.
Hermes was canceled mostly because USSR collapsed and Soyuz become available for commercial use.

>>10496241
there is a Al-Li tank which is also the body of the rocket and also where structural strength comes from, this is common knowledge

>>10496250
Expected fire between 10AM and 4PM? That's a wide range. Anyone else got a better estimation of when this candle is getting lit?

>>10496257
Didn't see anything but full booster sized tubes.
Elon specifically told he wanted to avoid the tank in tank problem with Spaceship.

>>10496247
Infinity because this bullshit isn't gonna get off paper.

But formation flying has been mastered long ago. Air to air refuelling is routine, and that's the exact same thing as this, except instead of connecting a fuel line you're connecting a tow. Doing this in an unpowered glide isn't a problem either, the first space shuttle orbital flights were followed by jets taking pictures of the heat shield after they re-entered.

>>10496206
I think the idea is that the rocket can glide to landing on it's own, but there's no runways in the middle of the ocean so it needs a tow back to the coast. The tow plane would simply release it once it's near a runway.

Planes can easily capture parachuting objects in mid air, but capturing something the size of a booster or even a fairing is going to be tough.

https://www.youtube.com/watch?v=Sdsn4snbzjo

>>10496263
no one knows

>>10496265
As in compared to the BFR you brainlet.

>>10496274
Honestly, designs are so foreign at this point, I wouldn't make comparisons.
While F9 might prove a workhorse, Starship might be a shit.

>>10496271
Just land on an aircraft carrier then, shit. Or adjust your flight path so you touch down on land.

>>10496271
Think about it more like when an airplane refuels another and not an airplane trying to catch something. Still a difficult process but certainly doable.

>>10496304
I doubt any carrier is big/long enough to catch something the size of a booster, even with arresting wires.

>>10496250
everyday basedstronaut stream is the best quality, and 6.5k people watching the hopper, damn

>>10496355
Scenes when they already did some firing but nobody noticed because of how shitty the quality of all these streams is.

>>10496064
Honestly, at that point. I would just look at putting wheels on the rocket and having it land itself like a plane instead of trying to catch it.

ohohoohohohohohohoh

>>10496392
Aren't OIG reports known for being brutal?

>>10496392
Wait Orion is the problem? Not SLS?

>>10496517
Same issues probably.

>>10495332
I'm hopping yes :^)

hopper is venting

Apparently they fueled it already.

>>10496582
How longer it should take until ignition?

>>10496591
5min

>>10496591
nobody knows

>>10496605
fuck off Elon

>>10496322
>I doubt any carrier is big/long enough
Anon, I have just the thing.

>hopper just blew up
HAHAHAHAHAHAHAHA

I wonder what's taking them so long. The tanks are full. The suspense is getting too much.

11000 people watching a water tower, Elon is a PR genius

anytime now Elon..

>>10496647
isn't he?
I'm not sure if it's sad or great.

Something's on fire? Venting?

>>10496591

>>10496675
yeah that's the methane flare, they burn it when it boils

>>10496675
Flaming off gaseous methane.

So are they de-tanking?

>>10496682
Does that mean that they're unfueling the hopper?

>>10496687
maybe?

>>10496392
Thank fuck for Trump

I want these manufacturers, contractors and money-men locked up for wasting so much taxpayer money on things never built.

Fucking James Webb will never fly, as well as WFIRST.

Cancel them all. Only then will (((LOCKHEED))) will bow to us.

>>10496196

Imagine where SpaceX or China will be in 16 years. This is so fucking stupid.

oops looks like something popped?

Am I watching a hopper or the world's largest steam cooker?

Tank burst it's over lads!

dumping fuel?

>>10496725
no, it's a flying rocket test stand

>>10496196
It‘s just the DLR. They asked for like 6 million euros for this. Probably just gonna be a few dozen people on this. Of course they won‘t have a rocket ready in a few years.
Hell Germany itself doesn‘t even build rockets. Germany isn‘t interested in space at all as well. You‘d get laughed out of the room for suggesting more funding for rockets there.

everyday is right, 12 minutes ago as of 3:27 PM texas time, there was a test
they did a small burn and we missed it

>>10496730
It's not the DLR. It's the ESA that has instructed different european teams to come up with NEW ways of reusability (e.g. not things that were already done). This is the proposal of the DLR and some other european teams cooperating. The point of the towing is to be able to return the booster to the launch site without wasting a lot of fuel on a RTLS burn.

>>10496738
where, show me.
Elon you dumb fuck, stop LARPing on /sci/ and light up that thing.

>>10496748
Seems interesting, and maybe promising. But my gut tells me that the in-air capture of the boosters is going to be very challenging if not outright dangerous.

>>10496762
it looked like a fart
I'll post a timestamp after Tim ends his stream and makes it public

>>10496765
BRAP

>>10496769
ok

>>10496774
>inhales

the NOTAM goes till Wednesday, remember. They're just going step by step to the actual lighting up

>>10496765
yep we are going to Mars baby

what's the pace of starship development, I wonder are they still on track for dear moon?

>>10496765
Looks less like a burn and more like they vented stuff through the engine.

I am curious if spacex fell on hard times could Elon pullout of tesla, and all the other dumb fuck ventures he has and double down there? I mean could he sell everything else, would he even?

>>10496798
yeah, some sort of preburner test maybe?
>>10496780
here you go
https://youtu.be/cOm4S8y59Hg?t=12431

>>10496789
depends on how manned starship development goes. Scaling up existing life support systems might not be as simple as they think. Processing the huge amount of habitable air takes a lot of filters etc

How did the hopper test do?

>>10496883
it farted and then everybody cheered

>>10496885
Wow

So this is the future of space

>>10496883
didn’t explode

No hopping and no explosion today

>>10496995
just a small, very well contained explosion

>>10495527
What is this from?

>>10495749
>we
Who is "we?"

>>10497010
>Who is "we?"
Elon Musk and his catgirls.

Well that was lame, pretty much what I expected though. The next one should be much more exciting and hopefully there is a non shit stream next time

>>10495327
have sex

>>10495753
Just make the engine out of platinum lol

>>10496105
It's not that it's a moving seal, it's that it's a moving seal separating hot oxygen rich gasses from fuel. If even a little bit of either fluid sneaks by the seal it can cause an abrupt engine failure. Making a rapidly moving seal that can remain tight enough to allow twenty minutes of total operation isn't too bad; Making the same seal last for hours of total engine operating time is extremely difficult.

>>10497067
your material science professor need a word with you

>>10497067
Well OBVIOUSLY titanium is the best metal because it's so strong and light.

>>10496265
The original ITS design had a more complicated lifting body shape, whereas the 2017 update and current version use a much simpler monocoque design with lift/drag surfaces mounted on.

'Box in a box' refers to legacy space-plane designs like Venture star wherein the tanks were separate internal structures rather than the body of the vehicle.

>>10495327
Two african americans?

>>10496517
they're pretty much the same program, just like Apollo-Saturn.

>>10496643
fuck man i didn't check the update yet, nice meme tho

>>10496789
Fucking way faster than even the optimistic people expected it to be

>It’s possible to make a self-sustaining city on Mars by 2050, if we start in 5 years & take 10 orbital synchronizations
https://twitter.com/elonmusk/status/1110329210332053504

>>10495695
>material
what about using tokamak-like magnetic field tech to help contain the combustion?

>>10497124
How many people for self sustaining city
and how do we define self sustaining in this case

>>10497137
can survive and grow in population with no earth resupply

>>10497124
>10 synods

Seems unlikely unless there is massive fleet expansion of starship type vehicles. That is a distinct possibility however.

>>10497136
>what about using tokamak-like magnetic field tech to help contain the combustion?

Then you're outside of the realm of chemical rocket propulsion and may as well use a fusion torch rocket engine instead - which would be awesome, if someone ever manages to make it work.

>>10497136
No, needs too much power plus exhaust gasses aren't charged plasma plus you can't feasibly contain significantly more pressure using magnets than you can with solid metals anyway

It would be much better to coat the interior of your engine with an inert substance to protect it, or for complete safety make it entirely out of some oxide material in the first place so it can't burn in hot oxygen no matter how high the pressure gets. Good luck making high pressure high power ceramic turbopumps though.

>>10497136
The weight requirements would be far too great.

>>10497142
Then probably too many to send in 10 sinodes

>>10497124
>

>>10497146
I think that is the exact plan, they want to be able to send hundreds of starships at once I guess

>>10497148
>never fucking ever
good thing Z-pinch fission is easy, practical and affordable, and basically gets you halfway to fusion efficiencies without magic.

>>10497163
It would be more like thousands at once to bootstrap to a technological civilisation. Again totally possible but they are going to have to generate a massive space fever among private investors and everyday joes selling their assets to gtfo earth. Which again seems like a distinct possibility. China is also another factor, with their fuckhuge industrial base they could crank out ship after ship once they have stolen the design details.

>>10497165
No one is letting fission rockets take off from their soil. I love fission too but it's straight delusion to think it will be used anywhere but space.

>>10497170
then the future of human civilization depends on SpaceX not letting Chinese steal the plans until we have enough numbers and tech to defend their claims to the good spots

>>10497173
There are useless wastelands. Most aren't anywhere near the equator unfortunately, though.

>>10497173
I think he meant Z-pinch FUSION.
Something like this.
http://www.projectrho.com/public_html/rocket/realdesignsfusion.php#hopezpinch

if anyone is OOTL wrt fusion this is a great video on the current state of the tech
https://www.youtube.com/watch?v=L0KuAx1COEk

>>10496152
More like FAIL Con

>>10497193
learn how to speak english you fucking nigger

>>10497197
im lazy

>>10497187
>Trickle charger a gigga nigga bank of capacitors from a fission reactor for a fraction of a second fusion burst

This is supposed to take off from Earth...how exactly?

>>10497197
gb2rdtfgt

>>10497206
I believe that it's meant to be made in orbit. Was the discussion about launch vehicles specifically?

>>10497187
No, i did mean Z-pinch FISSION, you use a strong electric current to collapse a pellet of enriched uranium or plutonium into its critical radius (the radius at which a spherical mass of that fissionable material will become critical). WAY easier than Z-pinch fusion, can power itself by putting a brayton cycle generator between the engine and the radiators giving off waste heat, and gives absolutely decent efficiency higher than that of the best ion drives but with maximum thrust output measured in kilonewtons rather than millinewtons.

>>10497239
Oops, my bad. I thought that since you were comparing it to other fusion engines that you meant z-pinch fusion. Sorry.

>>10497173
You launch out of the atmosphere with a set of chemical rockets, then while suborbital shut done the chemicals and start up the fission engine to reach orbit and go beyond. That's better because not only do you not irradiate the ground or lower atmosphere, you also are taking advantage of chemical engine TWR to get out of the gravity well quickly, then switching to your most efficient propulsion system to accelerate to orbital speeds.

>>10497244
Nah, what I meant was that rather than chasing fusion engine technology when we can't even build a self powered fusion reactor on Earth where weight isn't even considered, we should be looking at the next best thing, which is fission propulsion (either direct or 'geared', meaning you use the fission of tiny fuel pellets to heat greater masses of hydrogen to ridiculous but manageable temperatures, giving more thrust but less efficiency per mass propellant as you add more. This would make a lot of sense to do in a scenario where there are a lot of places close by to refill the cheap propellant but the fission fuel was hard to come by; missions hopping between the moons of the gas giant planets are a perfect example for a geared fission drive).

>>10497254
You bring up some good points, but I think the major problem with fission engines is that if an accident were to occur then fissile material is going to be spread along it's orbit. This will spell doom for loads of satellites and will be a disaster if a crewed vehicle were affected.

>>10497263
Fissile material is almost inert, even plutonium 239 has a half life measured in tens of thousands of years. It's roughly as radioactive as carbon 14.

Now, if you take a plutonium fuel rod and stick it into a reactor to induce fission events for a few months and take it back out, the rod will contain a lot of daughter products of fission events and be ferociously radioactive. However a fission Z-pinch engine would only be producing fission events in the fuel pellets being actively compressed in the main reaction chamber, and the daughter products would be flying off at several percent the speed of light in every direction, so again not an issue since nothing's hanging around.

The most radioactive bit to deal with would be the parts of the engine being sprayed with neutrons, and you deal with that by scuttling the retired engine into one of the Gas giants after it reaches replacement age.

REAL HOP WHEN

>>10497289
tomorrow or Wednesday

>>10497298
Damn so soon?

>>10497309
Yeah, rapid reusability dude

>>10497273
Kinda short sighted imo. The great thing about planets other than earth is that there is nothing to pollute.

>>10497314
Except for the water ice, atmospheric gasses, and solid materials you'd like to bring into your habitat spaces and use you retard.

>>10497316
Oh stop fronting fag, you know damn well there are dozens of celestial bodies more suited for a radioactive spaceship boneyard than a gas giant.

>>10496064
I hope they don't REALLY plan on dangling a booster from a 747

Crash em into Io then. Moon is already an irradiated volcanic hellhole, and volcanic activity will ensure the spent nuclear engine debris is buried and sealed away.

>>10497331
You want someplace you can feasibly go back to. Just in case...

>>10497323
Like India

>>10497335
In case what? you want to pick up the vaporized impact slag?

>>10497273
>>10497323
Why not send those in the sun? Won't everything get broken down into constituents eventually and some of it end up as fuel, even?

>>10495334
non gay male here.

but i must say hes quite handsome, hes only setback was his baldness but he could have made it work if he wanted by shaving it, but his implants are so flawless people almost forgot he was bald.

He's not like a super hot model, but thats better because hes not a cliche, hes kinda handsome, has intelligente smiles onbviously could make a gal curious and then confirm those suspicions. And besides, for the age he has and for obviously having not much time for excersise hes notorously buffed, great physique, womens gene craving snatches must get instantly subconciously gushin at that prospect.

And thats before even getting that hes literally iron man, "handsome billionaire genius philantropist inventor"

>>10496643
FUCKING SHIT DELET E THIS, DELETE THIS NOW, RIGHT IN THE FEELS

>>10497345
>>10497379
Yeah, so those are like, dynamic systems, man. You want to park this nasty stuff where you can keep an eye on it and make sure it isn’t doing anything. Preferably on the surface of some geologically inactive rock where you can send probes and what not to keep an eye on what’s going on. Out of sight, out of mind is bad, ya dig?

>>10497415
What the fuck is this post

>>10497416
You will never believe me but SpaceX actually tried to poach me to be one of their fuel guys.

>>10496643
name of the manga?

>>10497415
>what is EXTREMELY DEEP GRAVITY WELL

Makes it hard to drop anything into the Sun and also makes it pretty much impossible for anything to leave Jupiter

>>10497437
We need a pet blackhole for waste disposal purposes.

>>10497437
Do you look at your poop before you flush? It’s the same thing.

There is no reason to send parts like that to some purgatory where they can’t be studied and/or in the most far off scenario, we need the parts for something.

>>10497462
retard

>>10497467
>Flushing data down the drain

Yeah, okay faggot

>>10497424
Ok bro

>>10496304
>>10496322
Oh yeah, because I'm sure the Navy will be totally on board with that!

>>10497424
I believe you. The science & math board of 4channel is a prestigious forum and it's no surprise someone who arrived at these hallowed virtual halls was, during his ascent,, desired by the most cutting edge astrotech company in the history of mankind

I actually do believe you

>>10497523
they have 7000 employees or whatever, it’s not like every single one is an Einstein

Lots are in manufacturing

>>10497380
Gay

>>10497195
underrated post

>>10497424
What like gassing up their trucks?

I’m getting some Taco Bell tomorrow to eat while waiting for the test, what should I buy

>>10497739
get a 7 layer burrito with 2x bacon in it (you need to special order the bacon) and something else. tasty.

>>10497424
LARP harder faggot

>>10497739
Bitburger beer, paprika Chip's, some Doritos and sauce, pizza

>>10497298
No, it is still tethered to the ground. Real hop not anytime soon, maybe in a month or two.

>>10497163
When will people learn the hardest part of colonizing Mars is not getting there? The investment needed to develop Mars-technologies is way beyond SpaceX' capability.

>>10497380
>and for obviously having not much time for excersise hes notorously buffed, great physique

>>10495327

>>10497124
Bro, it wouldn't be possible to build a self-sustaining city on earth until 2050.

>>10497808
Spacex wants to be a transport company, all they need is Starship. If we build it they will come.

>>10497821
No, because launching cost never was and never the most expensive part of space exploration.

>>10497808
True if you want to colonize it. But having a mere manned base on Mars is within SpaceX grasp, if Starship works even half as well as intended.

>>10497825
>No, because launching cost never was and never the most expensive part of space exploration.

Except it kind of is. Space exploration is expensive because rockets are expensive and because rockets are expensive, you only have one chance to get it right, so your payload must be right, which means it too will be expensive, and that just reinforces the need for the rocket to work perfectly the first and only time it flies, because the payload is expensive and they won't get a second chance. With Starship, malfunctioning hardware goes from crippling to merely embarrassing.

>>10497842
In the 60s we exactly had what you are describing and most probes failed their tasks so a very rigorous quality control was introduced and now most probes are expensive but they do their job.

>>10497848
>>10497825
>>10497819
We are going to the stars without greedy and bullshit government contractors having a monopoly, goodbye you luddites and forward the final frontier.

>>10497852
>bullshit government contractors

But that's exactly what SpaceX is.

>>10495327
Earyh is glat

>>10497861
Bye bye luddite :)

>>10497863
>m-muh ULA i-is taking m-my space c-colony toys aw-w-ay

>>10497866
Bye :)

>>10497867
>>10497863
>>10497852
>having a nervous breakdown because you realize cheap rockets will not mean mars colonies

feeling sorry for you muskrat.

>>10497871
Bye luddite :)

>>10497862

>>10497866
Kek

>>10497893
Post moar earth chan, also BFR chan when?

>>10497848
Probes were never cheap. They've always been mass and volume limited, complicating the engineering.

>>10497895
BFR-chan must be thicc

>>10497898
She better be thicc

>>10497895

>>10497895
>Earthchan
Cringe

Whats up with the unknown man in the picture ? Where is his orbital fucking rocket ?
Where is the next new shepard hop ?
Does he do any work?

>>10497893
>not flat
Earch-chan should've been a tiddymonster

>>10497942
Jupiter and Saturn Chan should have big tiddies, every other planet is a chestlet.

>>10497947
Pls gib

>>10497928
Cultists are so fucking cringey.

>>10498009

>>10498019
Dem tiddies

This render of Starship by SpaceX was used on the cover of the April 2019 issue of Popular Mechanics.

>>10497436
Tomo chan

>>10498019
>metallic hydrogen equates to sadism
And now I know

>>10498096
>April 2019 issue

Woah dude... Are you like, a time traveller?....

>>10497875
You don't know mathematics or physics lmao go back to school
>calls me a luddite
I'm more involved than you in actually developing new technologies

>>10498064
Gas giants are oppai.

>>10498019
Jupiter-chan is a thicc amazonian goddess same with Saturn-chan

>>10498116
Nice larp Luddite :)

>>10498119
No larp here boy, but I guess you'll see for yourself in 10 years

>>10498123
Cute :)

>>10498132
If you're serious about space colonization, look into AI. Quite simply, it is not possible for us as biological lifeforms to span space and colonize other planets, it is not and never will be within our grasp. We will need to change our bodies to survive in space. Musk knows this, I don't know if he's banking on these technologies actualizing within 20 years or if he's just milking dumbasses from their money but either way, yea there will be no space colonization until we are no longer biological lifeforms.

>>10498150
Nice opinion Luddite :)

>>10498160
Explain the following:
>How can biological life explore space en masse
>If it is not possible, what makes you think YOU individually will be qualified and lucky enough to be one of the people who go to mars?
Also, how is my opinion a "luddite" one you idiot?

>>10498096
Man, those forward fins are going to be hot.
Every corner and end points are going to be...

>>10498172
>How can biological life explore space en masse

With technology that has existed for decades, name one actual barrier to in system colonisation

>If it is not possible, what makes you think YOU individually will be qualified and lucky enough to be one of the people who go to mars?

I never claimed to be that, Luddite.

>>10498185
>With technology that has existed for decades, name one actual barrier to in system colonisation
None of the technology that has existed for decades or exists now renders space colonization possible, moron. Do you even have any form of STEM degree?
>I never claimed to be that, Luddite.
If anything you're the luddite, you are putting faith in something that isn't real instead of focusing on actual possible technologies that will actually be able to advance our species. I guess projection is common, though, so it makes sense.

>>10498160
There's no air in space for humans.

AI powered robot avatars don't need air.

>>10498190
This sniveling moron actually thinks we'd be capable of creating an atmosphere on mars with modern technology. Just laugh at the loser

>>10498189
So you haven't posted a single barrier to space colonisation, because you know the technology exists to overcome whatever barrier you propose. Literal Luddite moving goalposts.

>>10498190
>What is cracking planetary and asteroid water ice into oxygen

Next, luddite

>>10498191
Never claimed that, poor strawman

>>10498193
>So you haven't posted a single barrier to space colonisation
Yes I did, it is literally not possible as biological lifeforms, we'd need to construct an atmosphere (not possible) or become non-biological lifeforms (not possible). Your "counter argument" was literally "nice opinion luddite" which isn't an argument, and only proves you don't actually have a counter argument.
>>What is cracking planetary and asteroid water ice into oxygen
Not possible lmao
>Never claimed that, poor strawman
Doesn't matter, it's one of many requirements that we can't reach yet.

Grow up, manchild. You will never be a spaceman. There are actual problems to work on that will actually advance the species, you want to hold us back by focusing on something that isn't possible. Stop projecting, luddite.

>>10498201
>>What is cracking planetary and asteroid water ice into oxygen
Not possible lmao

Luddite opinion disregarded and filtered, no more (you)s for you.

>>10498202
Go back to school and get a job actually doing something of value. In the end, you're not going to see space colonization anyway.

>>10498202
this desu
he should go back to fucking pigs and goats
leave greatness to real people

>>10498019
Sun-sensei

>>10498244
You aren't great and you don't have a job
I'm smarter than you and more educated

>>10498245
A bit thicc-er pls

>>10498255
tru the sun has enough potential calories to feed all the hungry kids you can make x 10^10, her T&A need to be fat AF

>>10498265
Just a little wider hips, that's all.
Thicccccccccc

>>10497195
More like Falcon Nein

Reminder to report shitposters rather than reply to them
They're just here for (You)s, nothing you post will ever convince them

>>10498245
I'm pretty sure that's not how global warming works. The jury is still out on whether that is how solar storms work.

>>10498265
Not far, just hips capable of bearing a planetary system.

>>10498296
*Not fat
Dumb phoneposters.

>>10498292
You can't ban people for posting anything that isn't child porn, retard.
You're a manchild incel, you will never go to space and space exploration is not possible with current technology. Stay mad.

>>10498300
>(You)

On the other note, is Tim there today?
Little weasel

twitter warriors butthurt because NASA cancelled their all female spacewalk

>>10498292
Imagine being this butthurt you report people who have a different opinion

>>10498396
They're manchildren, they can't handle people telling them their sci fi childish fantasies that they should have outgrown when they were 11 aren't possible.

What does /sg/ think about hybrid motors? Do you think they have a legitimate use in spaceflight?

I think so, but I think that they're overall a niche propulsion system because they combine the worst aspects of liquid propellant engines and solid propellant motors.

>>10498425
Hybrid is always worst of both worlds.
So no.

>>10498454
I've heard that hybrids can be useful as training projects for future propulsion engineers because of that "worst of both worlds" property. Someone who has worked on hybrids would already know the problems of both liquids and solids and how to deal with them.

>>10498467
Could make sense from that point.
But it depends on how much money are you willing to throw and is gain sufficient to justify it.
You know, economic stuff.

new tweet from the man himself

>>10498551
Wonder if the landing hardware will eat into the payload at all? Like 135t without launch mount landing and 150t with. Landing legs aren’t light

>>10498551
Ask him are we jumping today?

How will Nasa and other space agencies diversify future space colonies? It will be highly problematic if everyone allowed to live in Mars is either highly trained expert of certain area, contracted workers or millionaires who bought a trip.

>>10498621
No need to diversify anything. We should be glad that space will be settled by the elite and the experts. Their descendants will have average IQ 120+ due to founder effect.

>>10498174
It has just struck me how preposterous those fins are
Hmm, interesting

>>10498293
it needs more research
does anybody have any doujins

>>10498621
Why would it be problematic?

>>10498376
it's because they only have one medium torso available, and they need 2 for McClain and Koch. I'm sure they tried the large but I dont think it's easy to work with.

If we desire accelerant when it comes to space travel what would it take for the us military to get heavily involved again. Not just in the standard spy - killer satelite sort of way. Moon installations with optics on enemy stealth sats, or perhaps military base. If you wanted to trigger a new bout of heavy space spending how would you do it.

I think there is mass potential and opportunity there. Either from the chinese and other goverements to try to get involved and or catch up if the us built formal 'military or training facilities' on the moon, mars.

>>10498787
no, what it takes is money
government money is worth less than private money

>>10498787
As far as I know Titan has shit tons of ch4 available.
It's literally unlimited natural gas that can be easily accessed if you can refuel a starship at Mars.

>https://www.youtube.com/watch?v=21X5lGlDOfg
>bridenstine passionately defending sls, eus, and gateway
Someone's been getting quite a bit of calls recently...

>>10498874
he's a politician and he's in Alabama, if he were to say it's shit then he'd get lynched

>>10498551
>fragging
Haven't heard that since I was a kid playing quake.

Elon here.
No jumps today, sorry guys.
We have some issue with piping.

PS. Grimmes just blew me, shit was so cash.

>>10498905
Yeah, if he's a fellow quake player, then he gets free extra sympathy points from me. Not that he really needed them.

>>10498425
I think it should be mainstream by now.
But all we got was start and stop systems.
People are retarded if they think we can just switch to electric. We need time to build the nuclear reactors that will feed the transportation system.

>>10498930
anon, he's talking about solid/liquid hybrid rocket motors

>>10498951
Is it a thing? And how the fuck would it work?

>>10498964
solid rocket motors have both oxidizer and fuel mixed together and then cast as a solid during manufacture, then burned later at launch
liquid rocket motors have both oxidizer and fuel stored as liquids, mixed in an engine and burned during launch
hybrid rocket motors have either the oxidizer or the fuel cast as a solid at the factory, then the other is added as a liquid during launch and burned
it's all the complexity of a liquid rocket motor, with none of the efficiency

>>10498982
I'm not sure anon. SRBs have shit specific impulse and are only good at boosting things off the ground.
Looks overly complex for not much results.

>>10498992
congratulations you now know everything you need about hybrid rocket motors

We probably wont get any hops until all 3 engines are installed

>>10498695
Because if poor little Tyrone living in Detroit or Abdul living in wartorn Syria can't migrate to Mars for a better life, why should anyone else?

do we hop today or can i go to bed?

>>10499163
Go to bed

>>10499163
go to bed Mr Whiskers

>>10499165
>>10499169
will do that! night

Based Pence telling it like it is

>Vice president directs NASA to return to the Moon by 2024
>"If our current contractors can't meet this objective, then we'll find ones that will."

https://arstechnica.com/science/2019/03/vice-president-directs-nasa-to-return-to-the-moon-by-2024/

>>10499210
>"If our current contractors can't meet this objective, then we'll find ones that will."
I used to dislike Trump and Pence, but I'm really liking their attitudes with spaceflight. Hopefully some actual progress will be made from this.

>>10499358 new
>>10499358 new
>>10499358 new