/sci/ - Science & Math

>>15546811
https://twitter.com/RocketLab/status/1677060065277382656
>Splash it down, put it on a boat, sail off into the sunset.
>Easy as that.
Is it that easy in rocketry?
[reposting it for the new thread]

I'm afraid we're going to have an Apollo situation with Artemis. We land once then they cut out the later juicer missions because of cost.

When the fuck is the space force going to put meaningful payloads into orbit

>>15546826
That's literally why Gateway exists, to humiliate Congress into sending more astronauts so it's not sitting idle.

>>15546826
Probably lol. If Bezoshtein can find a way to get his lander price down as low as possible NASA *might* justify continuing Artemis purely through commercial partners. But the SLS problem needs to be solved, and no one is working on a human rated system to get people to the Moon. I’m not counting Starship I don’t think NASA will be comfortable with that until like 2035+

>>15546826
that's why In Musk We Trust
go starship go

So it looks like "Venus is like younger Earth" might be true, only by about 2.5 billion years instead of the Mesozoic.

https://www.nasa.gov/feature/jpl/study-finds-venus-squishy-outer-shell-may-be-resurfacing-the-planet

>“What’s interesting is that Venus provides a window into the past to help us better understand how Earth may have looked over 2.5 billion years ago. It’s in a state that is predicted to occur before a planet forms tectonic plates,” said Smrekar, who is also the principal investigator of NASA’s forthcoming Venus Emissivity, Radio science, InSAR, Topography, And Spectroscopy (VERITAS) mission.

Picture sadly unrelated to real Venus.

>>15546858
2.5 billion years is after the sun strips its atmosphere.
no hope

Did SpaceX do fireworks for 4th of July?

>>15545035
was right. the twitter account was deleted.
crazy that they don't allow simple non-ITAR pics like that.

>>15546858
We were robbed of that picrel
All we have left is living in pods in the middle of wastelands and the possibility of some microbes under kilometers of ice

>>15546887
I don't care about alien life as much as power of humanity.
We need to ascend the Kardashev scale and the solar system works just fine for that.

>>15546892
We're building it wellcucks, get with it or get dismantled

space flight is a revolting and unrealistic concept
you people don't belong on /sci/

>>15546920
>unrealistic
but its real right now

>>15546920
back to /x/ retard schizo

>>15546920
Nigger I am leaving

>>15546920
Seethe

>>15546920
What's unrealistic is europe having a successful space program.
American space flight is completely realistic.

As far as I am aware humans don’t really use the 80% of the atmosphere that is nitrogen. Does it need to be nitrogen or could it be another inert gas?
I’m thinking about a mars base with an atmosphere like 40% nitrogen, 40% argon, 20% oxygen. Since argon is so common relatively.

>>15547002
Humans don't but plants and microorganisms do. You'll need Earth-standard atmosphere for a proper colony.

>>15546827
https://en.wikipedia.org/wiki/National_Security_Space_Launch

fake

>>15546920
I unironically think this board should be deleted because it could not possibly be fixed to serve its original purpose.

If there were no /sci/ where would /sfg/ reconvene? /n/? Really spaceflight is not science. We couldn't make a sailing general in /sci/ if there just weren't a lot of boats and they were really expensive.

>>15547130
Yeah, /n/ would work. Launch watching does feel like trainspotting. There are whole forums where they track rocket serial numbers and schedule delays, for instance.

>>15547130
There was an anon who wanted for Betelgeuse to explore behind the sun so that we couldn't see it because he thinks it would be a "söy event" and that we should focus on "important things".
Why would /sci/ hate a rare event occurring to us? This board is fucking useless outside of /sfg/

>>15547137
How many anons care for probes here besides me?

>>15547151
I like probes.

>>15547002
Let's throw this stupid atmosphere into the trash.

>>15546826
EUS needs to be killed yesterday. Doing so would hurt nobody but Boeing and Bechtel.

What interesting things do we have for July? I only remember the Electron booster recovery attempt and Chandrayaan-3 launch.

>>15547198
Zhuque-2 is (maybe?) going to make its second attempt at being the first methalox rocket to reach orbit and Firefly might be trying for their next launch if the DoD decides that it's finally time.

>>15547002
Can you get enough nitrogen on Mars for large colonies in the future since it's only 3% of the atmosphere

>>15547222
That’s why I’m thinking you use argon. Gives you almost twice as much atmosphere to work with.
You can save the high nitrogen concentrations for the greenhouses.

>>15547222
3% of a whole planet is still a shitload of nitrogen nigger

>>15547252
The problem is that Mars' atmosphere is anemic, ~3% of an atmosphere that only has 1/200 of Earth's surface pressure is fucking nothing.

>>15547198
Watching cement dry

For those interested (I know there's at least one of you here) the roster poll for /sci/'s 4cc team this summer is up >>15547197
Wernher and Musk are still on the team

>>15547262
Mass of nitrogen per cubic kilometer of sea-level atmosphere on Earth is ~955,500,000kg. Mass of nitrogen in Mars's atmosphere is ~750,000,000,000,000kg.
So there's enough nitrogen in Mars's atmosphere to supply a pressurized volume 140% the area of France if the ceiling were a fucking kilometer high and you were dumb enough to use Earth's sea-level pressure. Mars has plenty of nitrogen to supply habitats of ridiculous size.

>>15546920
why does spaceflight cause so much seething?

>>15547002
>>15547026
>>15547222
partial pressure o2 niggers.
there is no reason to do 1 bar in a long term habitat

>>15547324
/sci/ unfortunately is downstream of twitter and nu-/pol/

Imagine how easy flying on Titan is

total recall is the most scientifically accurate mars movie correct

>>15547333
Yes there is, even more so. You want their lungs to be able to handle Earth pressure when they go home.

>>15547383
>Going back to Globohomo
Lmao

>>15546920
>>15547130
>>15547149
>>15547324
>>15547344
/sci/ may be the lowest IQ board. /sfg/ is an island of mediocrity adrift in a sea of retards that occasionally wash up on shore; the /med/icine general
is the only other bastion of sanity here, and that gets invaded by vaxtards at 10x the rate we deal with flerfers, ufooomers, and 'solve problems on earth'ers combined. somehow only the most absolutely braindead NPC cretins from /pol/ end up on /sci/, while the rare midwits and bigfoot-riding-a-unicorn-tier intelligent /pol/ posters never cross post here or anywhere. looking at this board's catalog genuinely horrifies me sometimes; how did things get so much worse in only 6 or so years, barely half a decade? this board used to actually have decent discussions about math, and topics not related to biology or space. did 4chan actually truly die after 2016? why don't the fucking mods actually enforce the politics stays on /pol/ containment rule any more

the last few threads have been decent at least, but this general feels like crowding up around a small dying fire surrounded by a howling blizzard

>>15547406
I hate to see it too. Hopefully with starship launching again we'll have a resurgence.

>>15547406
>how did things get so much worse in only 6 or so years, barely half a decade?

Any real answer will make you seethe since it's inherently political but yeah I guess you can keep pretending science is le ultimate cool middle man unaffected by any kind of political and social forces LOL.

>>15547026
Only a few plants get it straight from the air, and they rely on symbiotic bacteria in their roots. We could modify them to accommodate lower atmospheric nitrogen. In an y case most of our agriculture uses artificial nitrogen fertilizer.

>>15547222
Export N2 from Venus. That place has loads too much. Extract it from floating platforms and freeze it into insulated pods which you then launch with a floating magnetic launch tube. You draw power from solar, and from the heat differential available in the atmosphere.

>>15547026
There's nitrates in the soil anyway. I don't remember what the limiting factor for agriculture is supposed to be but it was something else.

>>15547447
>There's nitrates in the soil anyway

Bacteria fix it from the atmosphere so you still need it if you want to use actual soil and not just dump fertiliser into substrate.

>I don't remember what the limiting factor for agriculture is supposed to be but it was something else

Phosphorus, crazy rare. If there isn't any good deposits on Mars shit is gonna be tough.

https://twitter.com/RyanHansenSpace/status/1677190903562158080

> Since my last thread, #SpaceX has made a lot of progress with the upgrades beneath the #Starship OLM. In this thread, I will give an updated look at the transpirationally cooled steel plates and explain how they will all come together as well as some additional speculation. 1/n

>>15547423
I'm speaking in reference to this board and this site, not the state of science or the world in general. I.E. you faggot nigger pol retards injecting your low-iq NPC beliefs into every singe discussion everywhere. Trump winning was hilarious, good for america economically, and a far better outcome than hillary winning; but the way it emboldened polniggers into believing they were anything but the most retarded troglodytes in existence almost makes me regret it. election tourists should legitimately be rounded up and murdered en masse for ruining this site so badly. also, you're brown.

>>15547491
>I'm speaking in reference to this board and this site, not the state of science or the world in general

They are one and the same you imbecile. But hey I guess you also think that 4chan is le ultimate cool middle man too lmao

>>15547433
gl freezing nitrogen in-atmo on venus, cryocooling system performance is going to be turbofucked by the temp delta, and you'll need even more insulation autism than hydrolox requires. the correct answer is more like a low-orbit gas scoop, maybe incorporating nuclear thermal - a ram air intake used to compress and store gas, with some amount being tapped off and fed as reaction mass through an NTP engine to offset drag losses. then you process the captured gas in-orbit

maybe I'm wrong but instinctively I feel like heat rejection is going to be easier in vacuum with fukhueg radiators, rather than in venus's lead-melting-point sulfuric acid hellscape atmosphere

why is so much of the public interested in space topics like cosmology and spaceflight but few are interested in other fields of science like biology and chemistry?

>>15547491
Buck broken by Trump lmao

>>15547406
>/sci/ may be the lowest IQ board
/sci/ has always been pretty bimodal when it comes to intelligence, there actually are STEMfags here that actually know more than a thing or two, but on the other hand you have all the retards and tourists. Unfortunately the past few years have seen an increase of the latter.

>>15547507
The same reason why most popsci focuses on Physics and Astronomy. Biology and Chemistry generally aren't too "flashy".

>>15547489
https://twitter.com/RyanHansenSpace/status/1677190922809880577

> Since we know the locations of the 3 manifolds, the orientation of the center section can be determined. The trapezoid with the square holes will attach to the small manifold and the open hexagonal edges without any trapezoids will connect to the medium and large manifolds. 17/n

>>15547507
/smg/ on biz seems to have passing interest in biotech because of moonshot nature of drug discoveries by a listed company.
Same with /cmmg/ and geology and gold mines.
Not my area of expertise obviously. But if you asked me where in 4chan you would ask anons about these i'd say there.

>>15547507
Space is a physical frontier. Bio and chem are more abstract frontiers. Also pop culture that involves bioengineering tends to be horror or adjacent to it.

i didn't mean to derail the thread im sorry but it's also not my fault these faggots wont just leave

>>15547495
>They are one and the same you imbecile.
you are delusional and terminally online if you think 4chan's in any way a reflection of the world at large, or has any influence whatsoever; genuinely an unfixable and deranged state of mind. this site is shit because of 'people' like you who can't go 5 minutes without getting upset at <current thing>. go back to /pol/ and stay there.
>>15547510 you fucking vermin need to stay on your containment board, anything less than sucking trump's dick and somehow I'm a libuhrool, despite my praise of him. No, I genuinely liked Trump - it's you blazing homo nigger faggots that can't keep /pol/ on /pol/ that I take umbridge with. The 2016 election was magical and hilarious, and every anon that came to 4chan after 2016 deserves the death penalty in real life. if anything, Biden being elected broke the entire alt-right: it shattered the illusion that 4chan ever had any sway in the election to begin with. 2020 proved that 2016 was only a chance, temporary alignment between 4chan counterculture and the general public's disenfranchisement and resentment of both major parties.
>b-but the 2020 election was rigged!
who's the buck broken one now, huh cucky boy? literally the exact same cope libtrannies used.

>>15547514
and an exodus of the high int individuals as a result of the tourist influx. I'm almost at that point too, I used to actually effortpost but my enthusiasm has been waning as fewer high-level discussions happen.

I can't even begin to imagine how much better this entire site would be if every IP that visited /pol/ got an automatic 1 week ban from all other boards

>>15547502
>venus's lead-melting-point sulfuric acid hellscape atmosphere
You can have it as cool as you want just by climbing higher. There's a substantial thick atmosphere to dump heat into above 60km
All of this is done on high-altitude floating platforms.

>>15547540
>starts sperging about politics (not spaceflight related btw)
>gets mildly ribbed
>IT'S THEIR FAULT THEY HAVE TO GO BACK REEEEEEE

how about you shut the fuck up retard, no one cares

>>15547540
Still voting for Trump

>>15547313
Can you explain how you got those numbers? It makes no sense with Mars having a fraction of an atmosphere and a much smaller percent of nitrogen

>>15547567
He was comparing the ammount of nitrogen in a cubic kilometer of earth's air to all of the nitrogen in mars' atmosphere

>>15547540
Is /pol/ in the room with you now?

>>15547540
Unreadable word salad. Take your political shit elsewhere.

>>15547543
that makes more sense, except floating platforms are even more memetech than NTP gas scoops and you also have the massive delta-v penalty of not being *almost* in orbit already. an ultra-low orbit spacecraft can use a trivial amount of collected gas to climb and rendezvous with a tanker station whereas your magnetic launch tube would be miles long and still needs a 2nd stage somewhere for circularization. though really that other anon is correct that mars already has enough nitrogen, and shipping atmospheres between planets is some kardashev type 1.5 shit. harvesting is probably the smallest issue, where's the cycler for shipping kilotons mars-venus gonna come from? by the point you can build such craft you'll have the space manufacturing capacity for oniel cylinders, at which point you should be saying "fuck gravity wells"

>>15547522
does /biz/ even really care about spaceflight stuff, like varda? I could imagine them having a lot of fun speculating on $ASTR
>>15547548
/pol/ is not politics, /pol/ is the politically incorrect board on 4chan. all I said was /pol/ is shit and all you niggers went nuclear because your safespace echo chamber hugbox was under attack. /pol/ tourists are the most fragile special snowflakes in the world, not even trannies being told YWNBAW get as sensitive. once again: politics is not an issue, the only issue is the failure of /pol/ as a containment system to keep retards off of other boards.
>>15547552
same (but we both know desantis will be the nominee and he's got less charisma than jeb!). can't you fathom the idea that I'm conservative AND hate /pol/ shitters at the same time?

>>15547580
>does /biz/ even really care about spaceflight stuff, like varda? I could imagine them having a lot of fun speculating on $ASTR
Yeah I think some of them thought ASTR was going to the moon and then people here having to talk sense to them

minecraft in space

>>15547588
There's lots of those I think.
Space engineers maybe the biggest but idk

>>15547587
that sounds exactly like /biz/. I wonder when we're going to get the 2nd wave of SPACs and investor bait after astra popped the first bubble. it sort of feels like we're already in the swell with gravitics, vast, varda, all these rideshare tugs. will spinlaunch ever be newsworthy again? they might be the crash that pops the next bubble

>>15547599
>it sort of feels like we're already in the swell with gravitics, vast, varda, all these rideshare tugs

Difference is that most of these are privately funded with gigabux and won't be going public

>>15547472
If you really need N2 you can make it from NO3 though. There's microbes that do that too. Probably be easier than importing it.

Will a SpaceX IVA suit work for Mars surface work? IIRC the outer layers on EVA suits are only for managing the wild thermals and radiation of hard vacuum but Mars surface conditions should be pretty tame by comparison.

>>15547631
I don't see why not.

>>15547631
Not really, at least without significant redesign. Dust ingress is one really huge issue for lunar/martian surface use. The IVA suits also aren't really designed as anything more than decomp protection in an emergency - more like the orange space shuttle suits than an actual EVA suit - and they have fairly limited mobility even compared to the fatty xEMU suits (SX suit is 33% higher internal pressure than xEMU and has no mechanical joints = stiffer). Also, the current IVA suit ties into the Dragon capsule for O2 supply, pressure regulation, and thermal management; the onboard life support is very limited.

Apparently SpaceX has an EVA suit in the works that shares at least some heritage with the current suit, but not much is known publicly yet.

>>15547658
Yeah, but you don't need an EVA suit. Those fellas in Gemini did just fine with IVA's.

>>15547580
>desantis will be the nominee

>>15547580
>an ultra-low orbit spacecraft can use a trivial amount of collected gas to climb and rendezvous with a tanker station
That's a good point.
>where's the cycler for shipping kilotons mars-venus gonna come from?
I was thinking more of launching a continuous stream of frozen nitrogen chunks directly from Venus on transfer orbit to Mars. Not loading them into a cycler.
>"fuck gravity wells"
Probably, I just think planets are neat. Living planets more so.

>>15546884
Wait what's so bad about posting a picture of what is basically just a big bit of metal?

>>15547580
How about shut the fuck about politics instead of posting wall of text seething posts thay no gives a fuck about? You have to go back.

Instead of using giant arms on launch towers, can't we stretch out graphene nanowires and hold the rocket up that way?

2/3rds of that was spaceflight, illiterate mongrel

>>15547673
a direct shot makes a lot more sense, but how will the platform compensate for the recoil? there's only going to be certain times when the planets are aligned correctly for transfers so you'll be collecting large volumes of nitrogen and shooting them over comparatively short time spans which means a higher impulse from the space gun than if it was a continuous stream. I guess if you had enough of these platforms you could spread the load out but do consider that your muzzle velocity is going to be over 50km/s if you want a direct venus-mars transfer from a stationary (relative to the surface (i.e. non-orbital)) platform. even if you're shooting sub 100kg chunks that'll be an insane impulse to absorb, and the total recoil is a function of the transfer rate rather than chunk size (smaller chunks fired more frequently still averages out to the same amount of force). I love the idea of space guns, but they kinda need a planet as a foundation if you're using them for bulk material launching.

>>15547741
>2/3rds of that was spaceflight, illiterate mongrel

Abloobloobloo how about you shut the fuck up and cry about politics somewhere else? The only thing gayer than a poltard is some faggot crying about it on an off topic board.

>>15547746
maybe /pol/ shouldn't leak over to /sci/ then. a thought.

>>15547752
Maybe /pol/whiner bunkercucks should go back to their tranny discords where you freaks groom kids into your death cult. Everyone knows you sodomites pushed for gay marriage so you could rape your adopted kids and pimp them out to other faggots. Everyone can see the shit you disgusting freaks do at your pride parades.

A thought, you reddit nigger.

yikes

>>15547756
>NPC sodomite child rapist can't process information
>posts programmed thought-terminating response
Yeah, that's what I thought you fucking loser. Spacefag nigger thread for sodomite retards.

>>15547741
>how will the platform compensate for the recoil?
That's the best part, it won't. Since you're based in the atmosphere and extracting atmospheric gases, it doesn't matter if the recoil pushes you along.
But you do make a good point that transfer windows will severely curtail what you can do.

*raises paw*
Uh, spaceflight?

>>15547771
spacelight :3

>>15547777
wasted digits

>>15547752
Keel crying

>>15547777
Mars.... what a shithole

>>15547752
Buck broken

>>15546826
correct. Lunar Starship is not at all like normal Starship and it will cost significantly more.

>>15547788
Magnificent desolation.

> aerial refueling with liquid hydrogen
https://www.youtube.com/watch?v=RWDxxnl0lhw
wew lad

>>15547777
We are looking at kodiak remnant from the other side

>>15547741
>dump recoil into venus
>spin planet up
>???
>profit

>>15547776
Starships with worse layouts

>>15546826
>for the price of 1(one) EXPENDABLE artemis launch you will be able to make hundreds, if not thousands of REUSABLE Starships once they've gone through the rest of testing and prototyping
starship will evaporate the cost

>>15547822
>spin planet up
I don't bloody think the Artemis Accords allows it.

>>15546827
lmao is that a solar powered rocket

>>15547722
>why not use sci-fi technology insteead?
because it's not real or it's so incomprehensibly ridiculous to manufacture that it isn't even worth it

>>15547828
fuck 'em
SPIN 'ER UP

>>15547777
I love this picture, really tasteful roggs.

>>15547777
roggs...

>>15547788
>>15547794
the worst part of mars is the carbon dioxide clouding everything and ruining the vibe

>>15547833
You are meddling with powers you cannot possibly comprehend

>>15547777
Those rocks look to smooth to be mars

>>15547851
>rock spin
>grug cannot possibly comprehend
you cave men can stay on the ground

>>15547854
They're Jezero Crater river rocks

>>15547817
can someone draw a red dot or something to show the orientation change because i don't see it :(

>>15547881
>river rocks
NASA cannot be stopped

>>15547845
Are you suggesting we perhaps remove the atmosphere somehow?

>>15547824
At least you could come to your senses and put a reusable 1st stage under maccy-d's design

>>15547907
what is co2 of mars compared to earth expressed as milligrams per cubic meter

>>15547923
It's about the same I think

>>15547924
uh no

>>15547907
We could use some sort of magnetic field to prevent solar wind from blowing onto the surface and plant plants to turn the CO2 atmosphere into an O2 atmosphere

>>15547897
Senator Richard Shelby from Alabama, Mars Federation

>>15547926
Ok what is it then
Pressure on Mars is about 1% Earth and it's all CO2
What percentage of Earth's atmosphere is CO2? Probably about 1%

>>15548007
are you using a computer that is connected to the internet?

Whining about off topic stuff for mutliple posts is as bad as posting off topic stuff in general (i realize the irony of this post)
Ignoring it works
Just ignore it

>>15548024
No I'm in your house on your LAN but I can't get external net access

>>15547883
This picture >>15547817 was taken near the landing site, and this picture >>15547777 is where we are now.
https://mars.nasa.gov/mars2020/mission/where-is-the-rover/

>>15548007
mars atmosphere is .6% as thick as earth’s and 95% CO2. Earth’s is about .04% CO2. So about 10x as thick with carbon dioxide.

https://arstechnica.com/space/2023/07/us-space-command-says-it-needs-more-maneuverable-satellites/

>US Space Command says it needs more maneuverable satellites

>>15548134
Okay, pay Elon to build some.

>>15548134
they've been saying that for years. why dont they start asking for weapons instead?

>>15548076
Only an order of magnitude off, not bad

>>15548144
I don't think there is a feasible space weapon that doesn't break a bunch of treaties or start a space weapons race that would be fucked by everyone blowing up their sats.

>>15547588
rip /svgg/
I wonder what's the intersection between /sfg/ and /egg/ btw

I agree with anon that /sci/ is radioactive garbage. I go directly to >>>/sci/sfg to avoid looking at the other threads

>>15548144
Those are the classified items in budget requests with silly names like PRISM DOLPHIN.

I'm interviewing for the next closest thing to living on a mars colony today - a South Pole job! With the USAP.

>>15548180
someone should ignore international law and settle antarctica

does someone know why the exhaust pressure of an unchoked convergent only nozzle is always equal to ambient pressure?

>>15548184
I'm surprised there is no ancap underwater city or mega boat yet

>>15548180
Neat! I don't know if space agencies are specifically looking for that kind of experience when recruiting astronauts, but it's probably a plus

>>15548194
because the poeople who want those are retarded

>>15548180
Nice. Can't stand these "i hecking love mars" people who haven't even slept one day outdoors.

I’m tired of pretending like the added mass of wings and landing gear is a huge deal. Shuttle had oversized wings. You could get away with MUCH smaller control surfaces

>>15548194
the governments are stopping us

Realistically you could land on much smaller wings if you are willing to take that risk during landing.

2003 Japanese Private Methalox smallsat launcher

http://orbitseals.blogspot.com/2018/06/small-launch-vehicle-ibaraki.html#english


Talking about obscure japanese rocketry, take a look at this 2000s site
http://web.archive.org/web/20090413165654/http://www.geocities.jp/uchyuu_kaihatsu_shi/
treasure trove

>>15548242
>smallsat launcher
YAWN

I just want one rover to be dropped into the center of a volcanic lava tube

Is anyone else exhausted from NASA's "hurrdurr looking for signs of life on a dry lakebed" boogaloo? Rovers should be doing actual useful shit like surveying good spots for future bases

Lmao Japan's participation in the ISS (Kibo) was almost cancelled in 1989

>>15548254
>toober
Lava toobs are not good spots for future bases faggot

>>15548254
I'll do that if you get me there, I'll even bring my own sandwiches and a thermos of tang. Don't worry about a return, I'm good there.

>>15548261
>lava toobs are not good spots for future bases faggot
Enjoy the constant radiation and 3D PROONTERs which will never really exist I guess

>>15548260
https://mltr.ganriki.net/faq05s02d.html

Also early kibo

>>15547567
Mass of nitrogen in Mars's atmosphere is roughly equivalent to the mass of nitrogen in 785,000 cubic kilometers of sea-level Earth atmosphere. What's the confusion?

>>15548271
>oh noo some light rays
Dyel faggot

>>15548260
>the iss was designed almost 40 years ago
yikes

>>15548254
How do you intend to communicate with a rover in a cave?

>>15548289
Power to explore a history of MSC (chapter 11-12) has some good chapters on the early ISS negociations and designs, particulalry the rivalries between NASA space centers over the conception and share of work

https://history.nasa.gov/SP-4313.pdf

>>15548296
>how do you intend to communicate with a rover in a cave?
You don't. It scouts out the region and returns to another vessel to uplink the info it recorded and recharge its batteries.

Same thing that Ingenuity has been doing with Perseverance for years now

>>15548296
Automated.
>if (about to crash);
>(don't);

Have it explore the cave, take pics, then drive out and broadcast what it found.
Easy peasy.

>>15548304
Just send me in with a lantern and rope, I'll let you know what's down there chief.

>>15547406
Lmao i hope you retard pedo technocrats die soon before even getting suborbital, kys in a clotshot nigger

>>15547793
I've heard the same about previous SpaceX launchers before lmao

>>15548341
TBF crew dragon launches cost a lot more than putting other things on top of falcon.

>>15548341

>>15548350
Now that's what i call cope, certainly less than a Shuttle or your gay Starliner

>>15548358
Shuttle was so expensive in part because it always launched humans. Starliner will be much more expensive than other Vulcan payloads (if they even ever fly together). Blue Moon will be much more expensive than unmanned New Glenn payloads. And yes, HLS will cost more than a dozen uncrewed starships.It just comes with launching people.

>>15546811
Listen guys, even if starship goes to orbit, It literally can't deliver a payload.
What's the point?

>>15548375
>it literally can't deliver a payload.
???

>>15548382
It could maybe deliver starlink satellites.
But it can't deliver the biggest telescope.

>>15548383
Next question

I like that new space stations are going with the 60s/70s yuuge chunky can design instead of the gay spindly ISS monstrosity

>>15548384
Nothing points at them doing that, and it would mean loosing the second stage.

Now despite being 100 tons to orbit, Starshit can't actually launch a 100 tons satellite.
Having a bay door would compromise re-entry.

>>15548383
>but it can't deliver the biggest telescope.
It can

>>15548386
He already announced he would offer expendable Starship launches with 500T payload many months ago

>>15548398
I guess we'll see, but it's gonna be at least a decade until anything scientific rides on it.

>>15548401
>it's gonna be at least a decade until anything scientific rides on it.
It will be on Mars in half that time

>>15548402
I don't think so.
Maybe we'll have had some unmanned missions, but not much more.

>>15548386
What do you mean nothing points to this? Open your eyes

its so dead lately

>>15548395
Expending Starship increases the LEO payload to ~300 tons.

>>15548407
Nothing to talk about while the new pad is being finished. The hype will come back as soon as we never have to deal with another pad repair again

>>15548406
SpaceX had to go overboard to fish payload bays for falcon 9 as they were a lot of the cost.
Doing payload bays for starship would not be economical

>>15548413
Ahhhhh yes, the pad will certainly be “finish and forget,” just like the ceramic tiles!

>>15548254
pretty sure this is one of the reasons they are working on drones for Mars

>>15548420
I miss propellent cooling.
SN25 lost way too many tiles.

>Ingenuity cost $80 million

>>15548425
>SN25 lost way too many tiles.
when?

>>15548426
$800 million in today's dollars

>>15548430
Just look at it?

>>15548434
>Just look at it?
alright

>>15548383
>>15548398
Unrelated but has there been any news on the telescope Elon mentioned? I read they were talking to Berkeley and Perlmutter, but no actual details since.

>>15548375
>only test launch payloads matter

>15548420
the only people who haven't "forgotten" the tiles are the doomers with tiles living rent-free in their heads
>15548425
>SN25 lost way too many tiles.
Yes, that's why it failed to land. Such a disaster.
Wait, no it wasn't.

>>15548453
>>15548449
>>15548445
It took me 5 seconds

>15548458
>oh noes teh tilezzz
Doesn't matter until it comes back from orbit. Then we get to see how much better steel is than aluminum.

>>15548449
Haven't heard anything. Hoping for a 5m monolithic scope though
>>15548458
thanks

>>15548463
Yeah, and it WILL fail

>>15548463
Why is this meme so prevalent on /sfg/? You retards realize there’s a huge difference between a giant chunk of steel and mass-autismed dime-thin steel right? And just because your thin little sheet of steel doesn’t melt until X°, it will still structurally fail well before that.

>>15548458
How do you guyz expect this shit to re-enter from Mars with a crew?

>>15548479
It will be extremely painful

>>15548190
Yeah but I won't tell you
Hint: how fast is the exhaust moving

>>15548484
I know that the exhaust speed will only depend on the pressure.

>>15548458
It's a morse code

You know what, I think we'll get people to Mars.
But they're not coming back

>>15548488
Subsonic

>>15548493
they'll come back, with guns and bombs

>>15548479
Just send up a Dragon for them to ride down on. You can refurbish the ship in space. Why drop the whole ship down a well just to reuse the astronauts?

>>15548499
Starship wouldn't have the deltaV to reorbit earth

>>15548493
Why would you want to come back?

>>15548474
The fiber insulation is enough.
A hole does not cause structural failure.
Seethe harder

What's the best way to cope with the fact that there are no energy dense enough fuels for practical jetpacks or spaceflight

>>15548507
Build big

>>15548507
metallic hydrogen will come through for us anon

>>15548507
>cuck afraid of neutrons and regulation
many such cases

>>15548507
Practical jetpacks are an engineering problem

https://www.youtube.com/watch?v=UdfKyxdSJBk
>SpaceX is targeting Friday, July 7 at 12:29 p.m. PT (19:29 UTC) for a Falcon 9 launch of 48 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. If needed, a backup opportunity is available on Saturday, July 8 at 12:06 p.m. PT (19:06 UTC).
>This is the 12th flight for the first stage booster supporting this mission, which previously launched Sentinel-6 Michael Freilich, DART, Transporter-7, Iridium OneWeb, and seven Starlink missions. Following stage separation, the first stage will land on the Of Course I Still Love You droneship, which will be stationed in the Pacific Ocean.

>>15548524
>Stage 1 RP1 load complete
>prepping for strongback retract

>>15548529
sub T-3 minutes
stage 1 LOX load complete

>>15548534
Weather at Vandenberg is visually miserable, as per tradition

LIVE
https://youtu.be/FAWk5Nq01j4

>>15548534
>stage 2 LOX load complete
>in startup
T-1 minute

LOL only 30k viewers... SpaceX is dead

>>15548537
vehicle progressing downrange
all nominal, max Qute, etc

>>15548539
it is so over for spacex... how will they ever recover their business from the low viewer count????

>>15548521
nah, even if they were 100% efficient (theoretically impossible since they are heat engines), flight times would be very low

>>15548539
This is as routine as it gets these days. If you've seen one starlink launch you've seen all of the others.

bad upper stage cam confirmed

ROUTINE

wowzers I'm so excited for the millionth starlink launch
will they land the booster this time

I feel guilty for felling bored of weekly rocket landings when this would have been a dream not even a decade ago

>>15548539
its like the iss, nobody cares about it because it's routine. once you get a large enough number of people in space though, then the numbers add up and you can start following the statistics instead.

lol how can the 1st stage keep gaining altitude if the engines are off. Clearly fake

>>15548542
You're thinking of rocket packs

>>15548551
youre onto something anon

let's have some music in here, Boiler

>>15548425
Did it even lose any?

>>15548458
When was this taken?

>>15548553
I'm thinking of turbojet powered jetpacks

>>15548551
How can a baseball keep moving up even after its left your hand

>>15548536
Happy bday Clear - how nice of Elon to launch a rocket for her

>>15548561
I wanna launch a rocket into her

>>15548540
nominal everything

congrats to SpaceX engineers on landing this booster.

I would like to go out and see a train in the sky tonight from today's launch. Do the sunshields prevent that now or are they still visible after deployment?

Every time I feel bored of the F9 routine, I remember how Apollo became routine after 11 and then it was over 50 of nothing.
I fear so much that we will loose this too

>>15548567
they're still visible. If you want to be dazzled buy a cheap PVS-7 and get a C-mount adapter. Awesome astrophotography on a budget.

https://twitter.com/elonmusk/status/1677398442207748110

>>15548557
We talking about five minutes or twenty minutes
>>15548567
I don't think they're in the right orbit for that

>>15548570
More like Maldenberg

>>15548569
>PVS-7
not him but it seems like these cost thousands of dollars

>>15548570
Wait, there's really nothing left at the moment apart from SpaceX, can't use russian rockets either.

>>15548571
a few minutes
https://www.youtube.com/watch?v=WNDBrSxg3tE

its obvious that esa will work out a deal with spacex to get their own starship equivalent, just made in europe

>>15548585
they can buy starships from texas and florida just like everyone else.
spacex will not in a thousand years dedicate time to a stage 0 and starfactory for esa.
not happening lmao

>>15548573
I got my OMNI-VI with one tiny tiny blem for $1400.

>>15548590
we're going to have stage 0's all over the world for E2E

>>15548573
>PVS-7
aww hell nah
please at least get a pvs 14

>germany is cutting their space funding
>spain and poland are increasing their space funding
sounds like things are just balancing out in europe

>>15548597
Setting aside that the EU has no operational rocket.

>>15548594
for astrophotography you don't need tactical level specs. 7s are nice for the dual oculars but dual IIT/proper bino is useless

>>15548539
That's still more viewers than Biden gets for anything

My grandma said after the submarine sank the government said you're not allowed to go in a submarine or space anymore. It was on the news

>>15548597
>germany is cutting their space funding
Too many immigrants to feed

>>15548602
pvs 14 isnt a bino anon, and for astrophotography a pvs 14 is miles better and has much better compatibility compared to a pvs 7, what are you talking about? and "tactical level" doesnt mean anything, astrophotography has its own specific tube requirements and you are much more likely to find those in a mx11769 compared to a mx10160

>>15548610
hate old people

>>15548617
I mean you want to be able to use both eyes. Which a 7 allows. The alternative is an expensive 1431 or whatever that is simply unnecessary.

https://twitter.com/AndrewParsonson/status/1676967777691901953

Isn't Avio guaranteed a certain number of P120's per year?

>>15547777
checked

>>15548624
>SLS core stage
>superheavy side boosters
what the fuck

>>15548624
These Europeans are incredibly fucking stupid, like Chinese tier. Or they are hoping no one will call them out for lying
>let's make 2 completely different engines instead of 1
>oh they require completely different tankage and turbopumps and plumbing?
>no it will save us money
What fucking retard believes this shit

>>15548624
>incremental iteration of shitass design
see >>15548570
it's a bad rocket

>>15548623
I mean sure, even though the pvs 7 has its own problems with the fake bino effect,
but im still confused as to how tf you are capturing photos through the pvs 7, are you mounting the camera right up to the diopter? The pvs 14 is just miles better for photography.

>>15547540
>go back to /pol/ and stay there.

Butthurt fag detected.

>>15548636
I've been talking about eyeball viewing sorry.The C-mount is for a magnifying lens on the end.

>>15548570
The problem is no one is actually trying to copy SpaceX. Everyone has given up on that, and instead are desperately trying to invent a bullshit niche and distinguish themselves and entice investors. but the truth in doing that they are just shooting themselves in the fuck and will forever be more more expensive and less attractive. there will never be real spacex competition until SpaceX becomes Boeing 2.0 and stumbles.

>>15548640
ahh ok i see, we were talking about different things lol
sorry if i came off a bit brash, i was just confused
glad to see someone else dabbling into the nightvision world. its such a fucking amazing hobby/tool

>>15547540
i didnt read this, too long

>>15548397
>Ignoring Gravity Losses - The Show

>>15548644
You mean no one is trying to build a Starship clone. Some are trying to copy Falcon 9 or improve on it a bit.

>>15548624
I think it's actually clever on a political level. France and Italy will never agree to immediately start work on a replacement, but with that plan they could develop the engine while A6 is still operational. It also gives Prometheus a real role. Instead of the trying to go cold turkey it would kill off solids first, and then talk about a new platform. I doubt it will happen though, as without this goal in mind it seems a bit mental.
The fact they're talking about killing P120 is not good for Vega.

>>15548682
China is working on a Starship clone but it wont be a thing for another decade.

>>15548474
Yeah your naked assertion that the steel is too thin is more compelling evidence than the analysis done by the hundreds of engineers working on Starship

SpaceXbros should we be worried?

>>15548747
We'll have the best rocket the world has ever seen launching in 2 months, give or take. SpaceX is more than fine, they are excelling and nobody has even come close yet to Falcon 9, let alone Starship

These two companies are planning to build space stations with modules that are meant to fit inside of Starship

Gravitic’s StarMax is planned to launch is 2025 and Vast’ Starship class module in 2028

>>15548786
StarMax is huge. Imagine the size of an inflatable module that could fit in Starship?

>>15548644
Boeing at least has to worry about Airbus
>>15548703
>The fact they're talking about killing P120 is not good for Vega.
Not something I'd cry about
Vega is just not good

>>15548613
They're the future rocket scientists!

Are there any private Russian space companies?

>>15548536
>「くりあちゃんがオカマを掘ってあげるよ。」

>>15548682
trying isnt the word i'd use. all are dragging their feet still

>>15548624
so there's a memthane prometheus and a hydromeme prometheus?

>>15548798
The one that offers Proton launches to the West.

>>15548759
>give or take
give it two more months

>>15548852
Then keep on giving.

>>15548134
how many years did shelby hold this tech back by? 30?

Joule-Thompson bros...

>>15548134
>sustained maneuvering
so either spaceplanes or propellantless thrust

>>15548895
>propellantless thrust
Any news on that IVO Quantum Drive SpaceX launched? Guessing by the lack of any information about it it must have been a nothingburger

>>15548905
It hasn't launched yet.

>>15548905
It got pushed back to Transporter-9.

>>15546832
this, the entire Artimes program's selling point is NASA is jamming their dick further into the moon than with Apollo so it is harder to pull out

>>15548789
inflatables are stupid.
imagine the size of station that could be made in orbit from steel coils and a coil welding machine like what builds starship

>>15548907
>>15548909
I see

Why have we never studied the effects of spaceflight on young people?
How hard would it be to throw a 16 year old on the ISS for two months, and if it doesn’t hinder them any worse than adults, step down to 14 then 12 etc. or up to 4 months then 6 etc.

>>15548918
"ETHICS"!!!!

We have to wait for private sector to do it. Government dont want the responsibility. So some random civilian will do it. They will also have children in space and be the first subject of pregnancy inspace.

>>15548644
Currently in development in America are
>Falcon 9 but maybe sort of 3D printed
>Falcon 9 but it fell for the carbon fiber meme
>Falcon 9 but it's actually Antares
At least the bullshit niches are starting to converge on Falcon 9 rather than Falcon 1

>>15548960
Relativity should get started on 18m proonted Starship so by the time it's ready SpaceX will be doing theirs at the same time

>>15548618
Honestly after a certain point people should be killed or just exit society somehow. Probably age 65 or even 60. how many useful 60 year olds have you met? absolute drain on wealth

>>15548895
no, depots would suffice

>>15548973
Throw her in fucking jail for first degree murder

>>15548971
based and naritapilled
https://www.nytimes.com/2023/02/12/world/asia/japan-elderly-mass-suicide.html

https://arstechnica.com/space/2023/07/india-a-growing-space-power-is-forging-closer-ties-with-nasa/

>>15548992
oops

https://spacenews.com/interest-grows-for-human-spaceflight-in-europe/

>>15548918
ok, how do you find a 16 year old you would trust in space?

https://www.space.com/artemis-ii-orion-heat-shield-install

does ISS evacuation have a women and children first policy

https://payloadspace.com/india-set-to-launch-chandrayaan-3-lunar-lander-and-rover-on-july-14/

>>15548989
>kill yourself! there's a chance you could luck into a postmortem cameo in a logan paul video!

https://spacenews.com/chinas-landspace-set-for-second-methalox-rocket-launch/

https://spacenews.com/chinese-launch-firm-secures-fresh-funding-for-reusable-rocket/

> The first launch of the Tianlong-3 rocket is currently scheduled for May 2024. It is intended to be somewhat comparable to the Falcon 9. If successful, Space Pioneer claims it will be able to launch 30 times per year from 2025.

>>15549023
https://twitter.com/Cosmic_Penguin/status/1677246434259910657

>>15549018
these >>15549025 are more relevant to the other china news

https://twitter.com/Cosmic_Penguin/status/1677246434259910657

https://twitter.com/CNSpaceflight/status/1676604129634820096

another chinese company test fired their methane engine recently as well

L2 reports that SpaceX is working towards August for Starship flight 2, although this date may not hold. No legal issues lol.

>>15549036
so flight termination system (FTS) is fixed and not a problem anymore?

https://spacenews.com/europe-leans-on-spacex-to-bridge-launcher-gap/

>>15549035
shut the fuck up ching chong

https://arstechnica.com/space/2023/07/rocket-report-blue-origin-seeks-to-go-international-au-revoir-ariane-5/

Small rockets
> Virgin Galactic flies commercial mission.
> Vega C rocket still struggling.
> Astra creates spacecraft engine subsidiary
> PLD Space postpones debut launch.
> Canadian spaceport hosts its first launch.
> Vegas developer has big dreams.
> Sea-launch company gets small grant.

Medium rockets
> Ariane 5 makes its final launch.
> Falcon 9 launches high-profile European telescope
> Zhuque-2 rocket nearing second launch.

Heavy rockets
> Starship to use 'hot staging' in next launch.
> Vulcan sent back into the barn.
> SpaceX, FAA seek to dismiss lawsuit.
> Blue Origin seeks international launch site.

https://www.expressnews.com/business/article/spacex-faa-ask-dismissal-suit-seeking-starship-18183067.php

this might have been posted as its already like 5 days old, but I missed it

https://archive.is/20230704110017/https://www.ft.com/content/886d8638-8f38-404f-882c-50e358c5509c

>>15549047
right now there is basically only SpaceX, China as a second and then irrelevant countries and startups

thank you newsposter
I do miss roman newsreader

>>15549059
>international launch facility
They have to be careful; the US is very protective of where we let rockets go. ITAR is a bitch.
They should try one of the territories in the pacific, or possible the freely associated states.

>>15549052
>Astra creates spacecraft engine subsidiary
Will that make it easier to sell as a single piece in the bankruptcy auction?

>>15549087
the reason given is less ITAR restrictions so they can hire non-americans, sounds kind of fishy though
maybe in the case of bankruptcy, the subsidiary doesn't need to be broken up and is able to continue on as a business
not really sure how that works

>>15549059
YES! YEEEEEESSSSS!!!!!!!!!!!!!!!!

Seasteading is BACK

>>15549040
They did a redesigned FTS test about a month ago with a pressurized tank full of water.

>>15549106
I know, but doing a test doesn't mean the system works well enough yet or that FAA is satisfied
it was just a test

Thoughts on CNSA?

>>15549118
models on tables

>>15549118
They get things done. Benefits of top down united leadership.

>>15549116
If there's no outstanding legal issues, they probably like what they saw.

>>15549118
They stink and I don't like them

>>15549118
good, I think they'll ramp up pretty quick this decaded

>>15548384
It's a waste to half a half starship design like that. Better to create a second stage that's basically an extended tank and has a trio of raptors in the center that push the payload into LEO or beyond and the second stage tank + trio of raptors are sacrificed in the process.

The utility of the Starship configuration with its head cut off to satisfy a payload like that is quite counter-intuitive.

>>15548570
Elon is setting the record straight here as early as possible in order to nip in the bud talks of "de facto monopoly" bullshit. It's not SpaceX's fault the rest of the industry gargles cock and bitches about the taste of scrotum.

>>15549023
landspace, inspired by land, with space at the end.
xing xong was quoted, saying
>cging chang chong ching chong chang chong chang ching
very inspiring words. they will attempt to beat musk to orbit with their second launch

>>15548682
Problem even then is that their pace of development of a Falcon 9 clone is so fucking slow, that there's a greater probability of the Falcon 9 getting retired completely before the "competing" Falcon 9 clones see production cadence equivalent to the original, by which, the mass volume to orbit via Starship will be so significant that the cost per kg to orbit will be equal to or considerably less than the F9 clone products.

>>15549118
Creatively bankrupt.
"Insects" here refers to the Chinese.

>>15549106
then why did Elon say that was gonna take a long time to certify? was he lying?

>>15549118
it's probably a good thing that china is all drunk on their own fanfiction

>>15549118
Ambitious, but they're smart enough to take the incremental approach so they don't overextend. They still move at oldspace speeds but they're more likely to hit their timeline goals.

>>15549161
in fact they are less likely as they invest far less in space than America and have no commercial market to speak of

All upcoming US space stations

Does not include the Pathfinder station that Sierra wants to make out its LIFE habitat and dream chaser

How many of these will make it? Haven Axiom and Gateway are all for certain happening, maybe 2/3 of the CLD contract stations will exist. Blue and Sierra are committed to orbital reef and Northrops station is Cygnus based so wouldn’t be too expensive. Starlab just seems so bleh and Lockheed bowed out and was replaced by Airbus

Gravitics is a big what if and I didn’t include gravitics because they have more VC and strategy people than engineers emoloyed on LinkedIn

>>15549166
Optimally 3 of them will happen.

>>15548644
>shooting themselves in the fuck

>>15549155
i can't do nothin :(

>>15549156
I don't think he actually said it would take a long time, but my memory could be off.

>>15549118
what's sputnik and dragon 1 doing up there?

>>15549195
It's never to late to turn it all around, anon.
Start working on yourself.

But you need to honestly address your strengths and weaknesses and try to dig in to what's causing the latter.

>>15548624
>>15548846
I predict there will be singificant problems with trying to build one engine that uses such completely different fuels. It's probably harder than being honest and keeping two completely separate designs.

>>15548997
>India, a growing space power
Is it, though?

>>15549215
>I predict there will be singificant problems with trying to build one engine that uses such completely different fuels.
The LR87 ran on NTO/UDMH, kerolox, and hydrolox.

>>15549118
>Chinese Long March Series Rockets
The only thing this series of rockets has in common is the name.

>>15548610
Lol that’s it no more exploration anywhere sorry folks lol

ah bros should we be worried about this?

>>15549246
No go back to your bait thread

>>15549118
>putting a photoshopped starship knockoff stolen concept next to your real, successful rockets
shameful
no dignity

i think they should put cool nature photography graphics wraps on falcon 9s

why is a geostationary orbit higher delta v than an earth escape?

if you're going so fast the earth's gravity can't capture you, how can you possibly be in an orbit?

>>15549263
Inclination change / translation to appropriate longitude is a bitch.

>>15549263
You still have to circularize your orbit to get to geostationary. Earth escape is a velocity vector pointing straight out from Earth, and geostationary is a vector pointing perpendicular to that radius. Your transfer orbit will have lower delta v than escape, but it costs you extra to turn that into a circular orbit.

>>15549103
Freedom ship bros it's our time to shine

>>15549214
>brown
Eww

>>15549268
>>15549266
would it take significant or negligible delta v to change geostationary or geosynchronous orbit locations? Like, if the satellite was above canada and we wanted to move it above australia in 12 hours or a week, we would have to accelerate it, coast, and then slow down, but would that be a significant delta V cost since the altitude isn't really changing?

I just found out those assholes at ESA are spending $500 million of taxpayer money to launch an expendable junk cleanup satellite to grab an upper stage piece and de-orbit it
>hopefully this paves the way for ...
bankruptcy?

>>15548911

This. it's what SS is meant for.

how do you make a solid rocket engine that is an order of magnitude simpler than a liquid engine, significantly more expensive?

and will your next design generation choose solids again because they are "simpler"?

>>15549311
What if you could blow air into molten steel in zero G like bubble gum for unlimited size

>>15549316
Delet this and get your patent now anon

i just want one ONE other company to master reuse like spacex. fuck this and fuck blue origin they were supposed to be the ones and they blue it

>>15549326
China will do it

>>15549313
solids are only simpler on paper; the factories that cast them have to incorporate clinical insanity-tier explosion proofing autism for preventing ignition because they're essentially pouring hot molten bomb mixture into a tube

solids are cheaper/simpler has always been a public facing cope to justify them, it has never been true. the one and only real reason for using solids is to keep the ICBM manufacturers alive and healthy with R&D money and experienced factory workers.

Bros... I'm designing a rover for fun (no RTG cheating) and holy fuck is mass a bitch when youre under 125kg. Solar panels take so fucking much for a rover in the asteroid belt and you dont even get that much power.

>>15549352
design a really big rover with a fission reactor

>>15549360
Roves for 10k years

>>15549342
China will definitely not do it

>>15549103
>>15549270
Kino's back on the menu, boys!

anyone know a good site to view images of earth that show geology and building structures? Not like google earth, but more detailed or in a different spectrum. I want to check out if there are old ruins in my area.
I hope this is the right place to ask cause satellites fly in space.

>>15549383
nice try FSB

>>15549344
Why not use hybrids? Yeah you get the added complexity of an oxygen tank and some valves, but nowhere near the complexity of a liquid rocket and you’re not working with bombs anymore.
Plus you can have a little more specific impulse, as a treat.

>>15547776
It's pretty funny that the middle one is literally just a giant MARV/HGV.

>>15549398
multiple groups have tried and failed to make large hybrid solids, the largest that has ever actually been used (and the only one ever used in flight) is virgin galactic's spaceship two motor. off the top of my head the main issues were backpressure in the combustion chamber making it difficult to inject the oxygen, inconsistent burn rate down the length of the motor, and general combustion instability. the combustion chamber of a solid motor is a cylinder the entire length of the rocket, flowing oxygen at 1 end will preferentially combust that end first unless you run retardedly oxygen rich

>>15549398
>>15549447
An additional issue is that the burn rate is generally crap on hybrids, requiring much more complex geometries to increase the fuel grain surface area.

>>15549087
https://techcrunch.com/2023/07/05/astra-establishes-subsidiary-for-spacecraft-engine-business/

> There were two motives for the restructuring, related to operations and financing, the person said. American launch companies are governed by strict export control rules known as International Traffic in Arms Regulations (ITAR), while spacecraft component businesses are generally under the aegis of a different set of restrictions called Export Administration Regulations (EAR). While the two overlap substantially, they have key differences, related to who the company can sell to and even internal IT requirements.

> There are also differences in hiring. Under ITAR restrictions, companies need to obtain an export license to hire a non-U.S. person (which includes U.S. citizens, green card holders and other very specific groups). In practice, this makes bringing in talent from outside the U.S. very difficult. In contrast, EAR restrictions do not require the company to obtain an export license prior to hiring someone from outside the U.S. Astra has had to turn away “high-caliber” candidates for its spacecraft engine business due to ITAR restrictions, the person said

> Hiring for spacecraft propulsion engineers is likely top of mind for Astra. The company acquired electric propulsion company Apollo Fusion in July 2021, right after going public via SPAC merger. But according to LinkedIn, of the employees that list Apollo Fusion under their prior work experience, nearly all of them have since moved on from Astra. That includes Apollo CTO Ben Longmier, who is now with SpaceX, and VPs Jorge Delgado and Mark Hopkins.

lol so the acquihired a propulsion company but everyone left.

https://www.reviewjournal.com/business/tourism/the-next-frontier-of-tourism-las-vegas-spaceport-proposed-west-of-city-2800513/

>>15549487
>space
nope

>Lauer expects that within 10 years at least one of the 37 companies that are developing aircraft that can take off and land on a runway will produce a vehicle that can achieve Earth orbit and possibly visit an orbiting hotel in space as a tourism venture.
Is this guy braindead?
>He figures outside Las Vegas is the perfect place to build the spaceport because of the millions of tourists who come to the city for a unique travel experience, with gamblers who don’t flinch at betting thousands of dollars on a poker hand, a roll of the dice or a spin on a roulette wheel
???

>>15549398
oh yea, the other reason is no ICBM will ever be a hybrid because the entire point of solids is to be shelf-stable and sit in a nuke silo for a few decades without maintenance.

>>15549487
Vegas is a terrible place for a spaceport as is every place that isn't an east coast or with no cities in the direction of a polar orbit.

>>15549521
assumes there are going to be spaceplanes that can go to orbit in 10 years

>>15549526
So yes would be the answer to my question

>>15549525
it's not a spaceport, it's an airport. blame the retard real estate agent and the retard gpt journo

>>15549529
well clueless at least and not technically minded

>>15549533
you are too charitable

>>15549487
>>15549521
>space tourism destination
>ON EARTH

also,
>He noted that Colorado, Florida, Georgia and Texas are already competitors in the spaceport field. There also are established spaceports in Alabama, Alaska, California, New Mexico, Oklahoma and Virginia. Two Texas locations are privately operated by Elon Musk’s SpaceX operation and Jeff Bezos’ Blue Origin.
Cali and Florida are the only real spaceport states, and Texas will be added to that list once IFT-whatever is successful. calling colorado a spaceport is genuinely retarded, in fucking 2012 they wanted to do horizontal TAKEOFF for fucking dream chaser, YEA THAT ONE, THE ONE THAT NEEDS ATLAS/VULCAN TO GET INTO ORBIT??? HORIZONTAL TAKEOFF JUST TRUST ME BRO!! colorado spaceport has literally not launched a single object that has ever been labeled a spacecraft, in over a decade of 'operation'. Fairbanks is all sounding rockets, and all of the other "spaceport" states are either suborbital copium, literally no launches at all, or in at least one case a landing strip for dream chaser in alabama but NO LAUNCHES

>With 13 spaceports already authorized by the Federal Aviation Administration, the Las Vegas Spaceport would become one of the few inland ports. He believes an inland location would be favorable because it could be protected easier in the event of militarization.
this is the most retarded rich person. those idiots on the carbon fiber meme sub? smarter. every investor and VCbro that lost money on astra or other SPACs: literal einsteins by comparison

>>15549542
um i think you misunderstand. the airplane takes off and then goes to space like in staw wawrs like in the movie

when is litebird launching

>>15549542
There is an insane amount of rich people who lucked into a scam or daddies money. It's no surprise most of them are retarded, do you know how these people live? It's no wonder that generational wealth evaporates, even the rothschilds got their bitch heirs out coalburning and ripping through the family fortune like no tomorrow.

>>15546920
good morning benchod sir

>>15549003
No, little Billy, it has an assigned seat policy.

>>15548519
A nuclear reactor would be too heavy

>>15549279
>since the altitude isn't really changing
Orbital velocity and altitude are linked, go play some KSP.

>>15549521
That's like expecting that of course you can make a carbon-fiber submarine, you just have to innovate harder.
Remember kiddies, if it can actually do SSTO, then launching it on a first stage will always be better.

conventional fuel specific energies are severely limiting our spaceflight abilities. And even the DARPA nuclear hydrogen engines only has twice the ISP of combustion hydrogen engines.

>>15549398
>Why not use hybrids
because they suck and you should do liquid instead.
>but nowhere near the complexity of a liquid rocket
more complex in fact.