Spaceflight General /sfg/

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Spaceflight General /sfg/ Anonymous Fri Sep 6 21:56:47 2019 No.10951187 [Reply] [Original]

Sea launch edition

Old Thread: >>10949168

Anonymous Fri Sep 6 22:00:14 2019 No.10951197
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>>10951187
Context:
>https://www.businessinsider.com/spacex-starship-rocket-site-boca-chica-texas-faa-written-reevaluation-2019-8
Document referred to:
>https://www.documentcloud.org/documents/6382910-FAA-final-Written-Reevaluation-SpaceX-Texas.html

No plans for a superheavy-capable pad at Brownsville in the updated documents, and explicitly hiring for launch engineers with maritime experience: sea-launched superheavy and starship.

>>	Anonymous Fri Sep 6 22:06:36 2019 No.10951210 File: 360 KB, 2583x1317, seaDragon06.jpg [View same] [iqdb] [saucenao] [google] Did somebody say "sea launch"? https://www.youtube.com/watch?v=hHG3Z0O9Xzo

>>	Anonymous Fri Sep 6 22:35:58 2019 No.10951292 It will be top kino if they give NASA the finger about their stupid expensive ass launch site with 10000 pages of regulations and just yeet massive rockets off barges at sea.

>>	Anonymous Fri Sep 6 22:39:29 2019 No.10951300 >>10951292 It was already a necessity for their earth-to-earth concept, especially considering the sonic boom modelling we've seen for Starship's reentry.

>>	Anonymous Fri Sep 6 22:47:56 2019 No.10951317 STAINLESS STEEL DOESN'T RUST COMPOSITE + SALTWATER = DELAMINATION HE WAS PLAYING THE LONG GAME ALL ALONG

Anonymous Fri Sep 6 22:52:19 2019 No.10951324
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>yeah we're going to need to see environmental reports as well as you filling in thousands of pages of beauracrats paperwork
>Oh and we are charging 13m dollars for you to recover a stage
>Lol we launching in international waters now

>>	Anonymous Fri Sep 6 22:55:11 2019 No.10951326 File: 289 KB, 600x449, wack.png [View same] [iqdb] [saucenao] [google] >massive sea launched stainless steel mars colony ships will be a reality by 2020 >it's 2019

>>	Anonymous Fri Sep 6 22:55:31 2019 No.10951328 >>10951324 >>Oh and we are charging 13m dollars for you to recover a stage I still don't understand this.

>>	Anonymous Fri Sep 6 22:57:34 2019 No.10951330 >>10951328 Basically "oh fuck it's headed for the VAB" insurance, which is completely ridiculous on even the most cursory examination, but they charge it anyways

>>	Anonymous Fri Sep 6 22:58:15 2019 No.10951332 >>10951328 You don't understand where that joke is coming from or why the fee exists?

Anonymous Fri Sep 6 23:00:25 2019 No.10951334

>>10951332
The latter, though "Oh shit" insurance sounds right.
Why wouldn't it be refundable though? They land, nothing crashes, money is either refunded or held for insuring the next landing. The way it sounds now, it's just a bribe to keep operating.

>>	Anonymous Fri Sep 6 23:03:52 2019 No.10951339 >>10951334 consider that the flight termination system is still fully functional and even if it were directly headed for the VAB they could literally just babort it like a black baby on a sunday

Anonymous Fri Sep 6 23:04:42 2019 No.10951343

>>10951334
>Why wouldn't it be refundable though?
Probably because the USAF is afraid that something will happen with a landing that will cost alot more than $13M. What I don't get is why the USAF of all agencies worried about this. IIRC they don't have much power to do public clean up. If anyone, NASA should be the one doing the insurance since I think SpaceX has only done RTLS on NASA sites.

>The way it sounds now, it's just a bribe to keep operating.
More like a bribe to not operate.

>>	Anonymous Fri Sep 6 23:05:19 2019 No.10951344 >>10951324 Sucks Kwast sacrificed his career to get that knowledge out there. I hope theres more men like him to lead Space Force.

>>	Anonymous Fri Sep 6 23:06:24 2019 No.10951347 >>10951344 Not to discredit the man, but that fee hasn't been confirmed yet, right?

>>	Anonymous Fri Sep 6 23:10:31 2019 No.10951352 >>10951300 As much as I dislike sea launching, it is probably the only way to go for earth-to-earth launches, at least initially anyway.

Anonymous Fri Sep 6 23:15:07 2019 No.10951361
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Speaking of Vandenberg, I read that they are going to open a pad there for commercial launchers (Space Launch Complex-8).
https://www.vandenberg.af.mil/News/Article-Display/Article/1947013/2nd-sls-initiates-small-spacelift-spaceport/

Anonymous Fri Sep 6 23:24:00 2019 No.10951372

>>10951352
It's the safest way to quickly expand launch and landing site availability. Set up a bunch of facilities in international waters using repurposed oil platform designs, then ferry passengers via fast boats and service the launch vehicles with tankers.
Keeping everything in international waters should simplify a lot of import/export restrictions regarding rocket technology, and keep the whole thing safe enough and quiet enough to be viable near major cities. The unfortunate thing about this model is commercial transport to destinations far inland from coasts will not be a thing aside for military flights.

Anonymous Fri Sep 6 23:26:29 2019 No.10951380
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>late 1950s
>need to build a huge rocket out of spare parts
>succeeds ahead of time and under budget

>2010s
>need to build a huge rocket out of spare parts
>grossly behind schedule and over budget

Why was Saturn I so based over the Senate Launch System?

Anonymous Fri Sep 6 23:27:39 2019 No.10951382

>there's lots of interest in going to the Moon
>the Moon is difficult to land on
>Gateway/NASA and SpaceX are about to make going to the Moon easier and more routine
I'm expecting an explosion of developments on the Moon in the latter half of the 2020s.

>>	Anonymous Fri Sep 6 23:27:58 2019 No.10951383 >>10951380 Boeing wasn't entirely a complete pile of shit back then. Take a look at this: >https://komonews.com/news/local/door-blows-off-boeing-777x-during-stress-test That's from TODAY.

>>	Anonymous Fri Sep 6 23:34:43 2019 No.10951393 >>10951317 sea water does even more insidious things to stainless steel than it does to iron at least you can tell when your iron has been destroyed and turned to rust

>>	Anonymous Fri Sep 6 23:44:09 2019 No.10951403 >>10951344 Pretty sure the interview is the only source on the matter.

>>	Anonymous Fri Sep 6 23:48:19 2019 No.10951412 Why always land in Khazakstan?

>>	Anonymous Fri Sep 6 23:50:37 2019 No.10951416 >>10951412 These days some land in the pacific >https://en.wikipedia.org/wiki/Vostochny_Cosmodrome

>>	Anonymous Fri Sep 6 23:50:52 2019 No.10951417 >>10951412 I've heard that they make a mean Kuurdak over there. Maybe the astronauts are looking for some good authentic Kazakh cuisine after spending so much time eating from tubes in space.

>>	Anonymous Sat Sep 7 00:12:15 2019 No.10951447 File: 561 KB, 853x480, orion_test.webm [View same] [iqdb] [saucenao] [google] Orion when?

>>	Anonymous Sat Sep 7 00:14:03 2019 No.10951448 >>10951447 Only when the public opinion on nukes is able to distinguish how nukes work in space vs how they work on planetary surfaces. So a long fucking while.

>>	Anonymous Sat Sep 7 00:18:13 2019 No.10951454 >>10951448 >>10951447 Either that or until China threatens to throw one together to flex on the US.

>>	Anonymous Sat Sep 7 00:44:40 2019 No.10951475 File: 138 KB, 1024x947, 1566471355876.jpg [View same] [iqdb] [saucenao] [google] >>10951187 We don't talk enough about Zambia's space program. Wakanda forever https://youtu.be/7TI9ixb-a5M

>>	Anonymous Sat Sep 7 00:49:27 2019 No.10951483 >>10951475 Well, they didn't lack in gumption.

>>	Anonymous Sat Sep 7 00:55:57 2019 No.10951488 quiz, NO PEEKING: what was the highest human spaceflight earth orbit that didn't go the the moon?

>>	Anonymous Sat Sep 7 00:57:28 2019 No.10951491 >>10951488 Just Earth orbit?

>>	Anonymous Sat Sep 7 00:59:55 2019 No.10951498 >>10951488 Gemini uh... 12? Whichever one actually managed to dock with the Agena

>>	Anonymous Sat Sep 7 01:01:24 2019 No.10951500 >>10951488 some shuttle thing to deploy a sat?

>>	Anonymous Sat Sep 7 01:17:29 2019 No.10951523 >>10951498 Yes, the one Aldrin was aboard.

>>	Anonymous Sat Sep 7 01:21:06 2019 No.10951525 >>10951488 One of the Gemini missions but idk which off the top of my head

>>	Anonymous Sat Sep 7 02:34:55 2019 No.10951617 >>10951488 Apollo 8 didn't TECHNICALLY go to the moon

>>	Anonymous Sat Sep 7 04:53:11 2019 No.10951785 Pls come fast sep22

>>	Anonymous Sat Sep 7 05:43:51 2019 No.10951870 >>10951187 Fuck the FAA! t. Musk

>>	Anonymous Sat Sep 7 05:44:32 2019 No.10951871 What happened to the second hop?

>>	Anonymous Sat Sep 7 05:49:32 2019 No.10951879 >>10951347 Dude got fired for having aspirations. Seems pretty much confirmed to me.

Anonymous Sat Sep 7 06:00:37 2019 No.10951894

>>10951383
> Former Boeing Engineer Dr. Todd Curtis runs Airsafe.com and said this doesn't happen often. "I've never heard of a case where a door popped off like this during a stress test before," he said. "Doesn't mean it hasn't happened before, I'm just not aware of it."
Hahaha. Fuck, I‘m dying.

>>	Anonymous Sat Sep 7 06:06:34 2019 No.10951905 >>10951380 Think about the men who made it, what did they have in common? Boeing hires a lot of H1Bs now. Same with the 737MAX. And now the 777X static test.

Anonymous Sat Sep 7 06:33:43 2019 No.10951930

>>10951894
>>10951905
I used to not be bothered too much about flying. Now whenever I get on a plane all I can think is

>Jesus Christ my life is in the hands of 5 dollar an hour coder and engineer pajeets

I fucking love outsourcing and multiculturalism

>>	Anonymous Sat Sep 7 07:55:01 2019 No.10952042 >>10951447 It's the most inefficient drive ever. You only get couple of % of the used energy. Continuous-controlled-chain-reaction-in-a-nozzle drive when?

>>	Anonymous Sat Sep 7 08:03:40 2019 No.10952055 >>10951324 What's this about?

Anonymous Sat Sep 7 08:22:25 2019 No.10952098

>>10951380
Different stage of capitalism. The ship is no longer steerable. Guberment lacks focus so It's yuge initiatives rarely come to fruition. The incentive is on working on projects, not finishing them. Also erosion of democracy and goldfish memory span of a citizen.

>>	Anonymous Sat Sep 7 10:41:07 2019 No.10952514 >>10951879 But from what we know, he could've made it up to stir up more support for private space agencies over public ones.

>>	Anonymous Sat Sep 7 10:41:07 2019 No.10952515 >>10951871 Happened days ago dude, watch the youtube video

Anonymous Sat Sep 7 10:45:02 2019 No.10952523

>>10952042
It's extremely inefficient in terms of total percent energy captured from its fuel, however that amount of energy is so large in absolute terms per kg of fuel that the Orion drive still beats the shit out of every chemical engine you could even theoretically build.

If you want Orion but bay more efficient you actually want Medusa, which uses a tension-based shock absorber and catches the explosion plasma with a giant parachute instead of a small pusher plate. It's something like 10-100 times more efficient than Orion, with the trade-off being you can't use it to launch from the surface of anything and you have a harder time turning around in zero G.

>>	Anonymous Sat Sep 7 11:00:11 2019 No.10952566 >>10952514 unlikely this sort of bullshit is exactly what governments do

>>	Anonymous Sat Sep 7 11:06:41 2019 No.10952585 Is there anything happening today?

>>	Anonymous Sat Sep 7 11:40:16 2019 No.10952682 >>10952585 nothing scheduled i think they could always drop another wrench at Boing or some anon could catch a set of Raptors passing by on a truck

>>	Anonymous Sat Sep 7 11:48:25 2019 No.10952709 >>10952585 If I get the chance, then I'm going to buy silver wire for my rocket engine and share about that here.

>>	Anonymous Sat Sep 7 12:10:27 2019 No.10952777 File: 2.85 MB, 480x368, DismalSilverArrowana-mobile.gif [View same] [iqdb] [saucenao] [google] >>10951187 can some one say if these footage of so called nazi ufo are real or not also is it possible to manipulate gravity in some way

>>	Anonymous Sat Sep 7 12:11:32 2019 No.10952779 File: 1005 KB, 480x368, ezgif.com-video-to-gif.gif [View same] [iqdb] [saucenao] [google] >>10952777

>>	Anonymous Sat Sep 7 12:12:38 2019 No.10952785 File: 1.62 MB, 465x303, nazi_bell_die_glocke_ufo.gif [View same] [iqdb] [saucenao] [google] >>10952779

>>	Anonymous Sat Sep 7 12:16:25 2019 No.10952796 >>10952777 Magnetic drive is not unheard off dumbass. Im sure everyone experimented with it at some point yes including the Germans in their nazi faze.

>>	Anonymous Sat Sep 7 12:20:28 2019 No.10952810 >>10951187 Im thinking they will do trident style launch system like the subs use. Screen cap this

>>	Anonymous Sat Sep 7 12:23:18 2019 No.10952820 File: 29 KB, 640x360, x65j79Td.640x360.9.jpg [View same] [iqdb] [saucenao] [google] how would you guys use the earths very own rotation to launch things into space?

>>	Anonymous Sat Sep 7 12:29:14 2019 No.10952840 >>10952777 Hard to believe the tech was completely lost but after seeing NASA plummet to mediocrity after the Nazi alumni died off, its almost believable.

>>	Anonymous Sat Sep 7 12:30:23 2019 No.10952843 >>10952820 you can't

>>	Anonymous Sat Sep 7 12:32:52 2019 No.10952851 >>10951894 >This is very unusual, certainly. For one thing, they're designed so the doors don't fall off. In this case the door fell off by all means but that's very unusual >The door has been blown beyond the environment

>>	Anonymous Sat Sep 7 12:35:09 2019 No.10952863 >>10951380 von braun, for one

Anonymous Sat Sep 7 12:40:35 2019 No.10952880

>>10952820
It's already being done (sort of). Most launches head eastward because by following the rotation of the Earth the rocket gains a small speed boost which helps in reaching orbital velocity.

There's also the concept of a space elevator which is essentially a very long cable that reaches out to geostationary orbit. The cable uses the centrifugal forces from the Earth's rotation to keep it taut. However, such a cable would have to be both extremely lightweight and extremely strong, a material with both of these necessary properties isn't available right now.

Anonymous Sat Sep 7 12:52:29 2019 No.10952921

>>10952820
Space elevator, uses Earth's spin to hold up a tether via centripetal force, however it requires materials that are orders of magnitude stronger for their weight than anything we currently have, and it needs those supermaterials to be produced in lengths tens of thousands of kilometers long. Far beyond current technology.

A space elevator on Mars would work if it used carbon nanotubes. A space elevator on the moon would work using kevlar or titanium cables. A space elevator on Ceres would work using mild steel, and on any other asteroid for that matter.

Space elevators are likely to be used in the future for flinging material mined from asteroids towards targets where those materials are being used, and for accessing orbit around small moons of gas giants, but not for accessing space from the surfaces of any of the rocky planets (Earth, Venus, Mercury, Mars).

>>	Anonymous Sat Sep 7 12:57:43 2019 No.10952939 File: 549 KB, 1920x1165, 1567377643436.jpg [View same] [iqdb] [saucenao] [google]

Anonymous Sat Sep 7 13:14:21 2019 No.10952998
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here's a table comparing the different proposals for the space force
>left = pentagon proposal
>middle = senate proposal
>right = house proposal
the middle column (senate) and right column (house) will need to be finalized into a single proposal by the end of this month

Anonymous Sat Sep 7 13:22:35 2019 No.10953025
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>>10952820
Launch from the equator into equatorial low Earth orbit. Due to help from Earth's rotation this requires the least delta-v of all Earth orbits. And also radiation in this orbit is greatly decreased compared to higher inclinations or altitudes.

>>	Anonymous Sat Sep 7 13:23:58 2019 No.10953032 >>10952998 Doesn’t look like a new branch is too likely then.

>>	Anonymous Sat Sep 7 13:27:27 2019 No.10953047 >>10953032 it may end up being a space "corps", but they will use the name space "force" anyway

>>	Anonymous Sat Sep 7 13:28:27 2019 No.10953054 >>10953032 >>10953047 there's nothing to do in space at the present moment all that's really needed is framework to expand upon later

>>	Anonymous Sat Sep 7 13:33:50 2019 No.10953078 >>10953054 >there's nothing to do in space at the present moment there's lots to do in orbit and ground based infrastructure. the military is already working on them though.

Anonymous Sat Sep 7 13:38:17 2019 No.10953093

>>10953054
China eyeing the moon, India's anti-sat test, and the little trade between SpaceX and ESA has shown that there are plenty needed to do in space, mainly enforcement. Sure it wont be as "glorious" as colonizing Mars or building O'Meme cylinders, but it's an important part of spaceflight.

>>	Anonymous Sat Sep 7 13:44:31 2019 No.10953113 File: 1.52 MB, 946x1570, isllmesh[1].png [View same] [iqdb] [saucenao] [google] https://cis471.blogspot.com/2019/09/inter-satellite-laser-link-update.html

>>	Anonymous Sat Sep 7 13:49:48 2019 No.10953135 Just the other day I read that there's only ever been one mission that sent people between two different space stations. Cool mission but depressing that we haven't done it since.

>>	Anonymous Sat Sep 7 13:52:38 2019 No.10953151 >>10953135 that mission was between the only two stations in existence then they merged and we were back to one station now we have 2 stations total again, but one is china's, and thus not worth visiting

Anonymous Sat Sep 7 13:53:19 2019 No.10953153

>>10953113
>OneWeb has decided not to use ISLs in their first constellation and will route traffic through terrestrial gateways. This decision seems to have been at least partially motivated by Russian insistence that satellite traffic passes through gateways within their borders. I imagine China and other nations will impose the same restriction.
This is probably how it will end up being for authoritarian countries. It will be a positive for those regimes too because it will end up adding so much lag to satellite Internet constellations that it makes them non-competitive with local ISPs.

>>	Anonymous Sat Sep 7 13:54:53 2019 No.10953160 >>10953153 What's SpaceX stance on this with their Starlink?

>>	Anonymous Sat Sep 7 14:15:29 2019 No.10953242 >>10953160 Nobody knows but hopefully they'll give an update on that at the next Starlink launch which should be sometime this year.

Anonymous Sat Sep 7 14:21:46 2019 No.10953260
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>>10951498

Good guess (esp latter clause). It was actually Gemini 11, which did dock with the Agena (and used it for a high, eccentric boost). at (over) 1300 km perigee, the high point of the orbit was about a tenth of earth's diameter.

Although quite high, this orbit still falls within the convention for LEO (low earth orbit). So, by definition, only the Apollo moon trips have gone beyond LEO.

>>10951617

Yes, it did.

Anonymous Sat Sep 7 14:24:49 2019 No.10953275
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Threadly reminder to thank the SLS (god bless it) for being the most powerful, the tallest, and the most American rocket ever built. Also there is no other way to send Americans to the moon and beyond, I'll make sure of that to guarantee the safety of this proud nation.

>>	Anonymous Sat Sep 7 14:33:50 2019 No.10953294 Has work resumed on Florida Starship?

Anonymous Sat Sep 7 14:49:51 2019 No.10953337
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>>10953275
>most powerful
>tallest
>most american
>no other way to send americans to the moon
>and beyond
>guarantees safety
Senator Shelby I must inform you that each of your claims is incorrect individually and as a whole, or in other words, WRONG

>>	Anonymous Sat Sep 7 14:55:51 2019 No.10953365 File: 91 KB, 730x1024, 1566232098505.jpg [View same] [iqdb] [saucenao] [google] >>10953260 based

>>	Anonymous Sat Sep 7 15:02:56 2019 No.10953386 >>10953337 If only Trump will btfo SLS like that.

>>	Anonymous Sat Sep 7 15:06:15 2019 No.10953398 >>10953151 India plans to have one sometime in the 2020s. It's just a single module though. Maybe we'll see a mission that sends people between the ISS and the Gateway?

>>	Anonymous Sat Sep 7 15:47:04 2019 No.10953508 >>10952796 magneto drive only works in atmosphere, tho

>>	Anonymous Sat Sep 7 15:53:19 2019 No.10953527 >>10953160 they'll either not offer service in those countries depending on the terms (and hopefully juicy pirate bullshit) or they'll offer service in those countries but it'll be absolutely hamstrung my money says the first option

>>	Anonymous Sat Sep 7 16:05:57 2019 No.10953568 >>10953398 India will probably scrap that plan once starship launches and go full bore to make use of that full retard mass cap as will everyone else, in all likelihood

>>	Anonymous Sat Sep 7 16:18:43 2019 No.10953604 >>10953398 ISS is in a bad orbit to get to Gateway

Anonymous Sat Sep 7 16:39:15 2019 No.10953651
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>>10952709
Update, the only jewelry store that is open today wouldn't sell me silver wire unless the owner was available. Guess who is on vacation this week?

I'll try again later.

>>	Anonymous Sat Sep 7 16:50:13 2019 No.10953670 >>10951447 The cost of an orion rocket is horrifying-nuclear bombs are veeeeeeeeeeery expensive to build and you need a fuckload of them.

>>	Anonymous Sat Sep 7 16:54:42 2019 No.10953680 >>10951475 I love Africans.

Anonymous Sat Sep 7 17:21:57 2019 No.10953772

>>10953670
One reason why nukes are so ungodly expensive is due to the fact that they are a weapon, and a weapon needs to be ultra-reliable both when you want to to go off and when you want it to NOT go off. Orion wouldn't have the fancy anti-tamper detonation systems or primers or dial-a-yield system, its nukes would be the simplest possible double-explosive-lens implosion device, each one weighing no more than ten kilograms, with a yield of a few kilotons. Modern nuclear weapons were not designed to be mass produced like the charges of an Orion drive would be. An Orion drive's nukes would be effectively four components; a hollow fuel pit (probably plutonium), two high explosive lenses, the ignition system, and the casing (probably just an aluminum can, to hold everything). The only expensive component on that list is the fuel pit, and even then it's mostly expensive because of the fact that plutonium needs to be produced in breeder reactors. If we can get the cost of plutonium down a lot, by switching to a fluid fuel breeder for example, then we can drop the price of a full Orion charge load from hundreds of billions down to tens of millions, still expensive but much closer to sitting in the range of feasibility.

>>	Anonymous Sat Sep 7 18:46:15 2019 No.10953974 How much would the sound/vibrations of a sea launch fuck with maritime animals? Seems like regular sea launches in all oceans (for E2E) is noticeably accelerating the current mass extinction.

Anonymous Sat Sep 7 18:48:14 2019 No.10953977

>>10953974
>How much would the sound/vibrations of a sea launch fuck with maritime animals?
I can't source it but I recall hearing (lel) that Sea Dragon would probably deafen whales for dozens of miles and stress them for hundreds of miles. So, very bad for them.

>>	Anonymous Sat Sep 7 18:49:11 2019 No.10953980 >>10953772 isn't it better to do casaba howitzer style nuclear shaped charges for Orion? >>10953974 you're not dissipating it all into the ocean, you do a flame diverter just like on land

>>	Anonymous Sat Sep 7 18:52:22 2019 No.10953986 >>10953977 They could maybe build an artificial lake specially made to launch rockets

>>	Anonymous Sat Sep 7 18:54:34 2019 No.10953991 File: 205 KB, 1908x1146, thefapchamber.jpg [View same] [iqdb] [saucenao] [google] >>10953986 The walls of the lake would have to be "echo proofed" like in the related picture or else would the reflected sound waves would damage the rocket severely.

>>	Anonymous Sat Sep 7 19:00:32 2019 No.10953997 Scott manley video on india's lunar probe failure https://youtu.be/5xKJG00-S_c >>10953991 Not if the rocket is out of the water by the time the sound waves come back

Anonymous Sat Sep 7 19:09:26 2019 No.10954010

>>10953977
>>10953980
I know it's not as bad as Sea Dragon, as first the air and the platform vibrates, which then give vibrations to the water. With Sea Dragon, all vibrations were exclusively underwater. But still that's an extreme amount of vibration/sound which probably never occurred during the 4 billion years of maritime life evolution.

Anonymous Sat Sep 7 19:14:52 2019 No.10954022

>>10953997
>Not if the rocket is out of the water by the time the sound waves come back
So I did the math. Using the Saturn V as a reference, it accelerates about 0.4g and is 42.1m tall. Assuming that sound travels through water at 1.5 km/s and that the Saturn V was submerged halfway at the start of launch, then the lake would need to have a radius of 2457 meters in order for the rocket to be clear of the water by the time it's sound waves bounce back from the walls of the lake. The lake would also have to be 2478 meters deep so that the sound reflection bouncing off the lake bottom wouldn't meet the rocket either.

While most man-made lakes aren't perfectly round, most of the largest lakes made do seem to be big enough to meet the radius requirement, none meet the depth. The deepest lake (man-made or natural) is Lake Baikal at 1642 meters. While it's not impossible to make a lake big enough to meet the requirements, that's a huge amount of engineering to make. Probably one of the largest feats of civil engineering in the world.

>>	Anonymous Sat Sep 7 19:41:56 2019 No.10954085 >>10954022 Just drop a small nuke to the bottom of the lake, that'll make it deeper.

>>	Anonymous Sat Sep 7 19:49:28 2019 No.10954104 >>10951894 "It's unlikely this will speed up certification," he said.

>>	Anonymous Sat Sep 7 19:54:18 2019 No.10954115 >>10954085 Didn't the Soviets try to make lakes with nukes and ended up making tons of radioactive water?

>>	Anonymous Sat Sep 7 19:55:26 2019 No.10954118 >>10951380 German Engineering

>>	Anonymous Sat Sep 7 19:56:57 2019 No.10954121 >>10954115 I think so they technically succeeded

>>	Anonymous Sat Sep 7 19:59:38 2019 No.10954128 >>10954121 >they technically succeeded That line seems to crop up alot in Soviet engineering history.

Anonymous Sat Sep 7 20:20:31 2019 No.10954166

https://spacenews.com/spacex-says-more-starlink-orbits-will-speed-service-reduce-launch-needs/

The company needs another six Starlink launches before it will have enough satellites to start partial service, but by splitting satellites into 72 rings instead of 24 as originally envisioned, Starlink will be more spread out, enabling greater launch efficiency, SpaceX said.

“The proposed respacing would require fewer launches of satellites — perhaps as few as half — to initiate service to the entire contiguous United States,” SpaceX told the FCC Aug. 30. “Globally, the modification would enable more rapid coverage of all longitudes to grow toward the Equator, as well as bolstering capacity over in areas of greater population density.”

>>	Anonymous Sat Sep 7 21:03:59 2019 No.10954266 >>10953974 by the time E2E comes online we won't have any sea life left to worry about

>>	Anonymous Sat Sep 7 21:05:01 2019 No.10954272 >>10954166 This is actually a big blow to Canadians who were previously set to be the first Starlink customers

>>	Anonymous Sat Sep 7 21:10:43 2019 No.10954288 >>10954272 They'll have to find another way to download moose porn.

>>	Anonymous Sat Sep 7 21:18:52 2019 No.10954312 File: 53 KB, 813x843, hopper.jpg [View same] [iqdb] [saucenao] [google] >>10952515 This is the most ridiculous thing I've ever seen

>>	Anonymous Sat Sep 7 21:20:40 2019 No.10954317 File: 2.93 MB, 1280x720, majesticwatertower.webm [View same] [iqdb] [saucenao] [google] >>10954312 An excuse to post this then.

>>	Anonymous Sat Sep 7 21:26:48 2019 No.10954330 >>10954312 >you'll never see a water tower fly for the first time again

>>	Anonymous Sat Sep 7 22:09:19 2019 No.10954424 File: 151 KB, 800x801, spacedepot.png [View same] [iqdb] [saucenao] [google] What would this place sell?

>>	Anonymous Sat Sep 7 22:09:58 2019 No.10954425 >>10954424 meatballs

>>	Anonymous Sat Sep 7 22:17:18 2019 No.10954439 >>10954424 Space

>>	Anonymous Sat Sep 7 22:20:10 2019 No.10954441 >>10954424 pot

>>	Anonymous Sat Sep 7 22:22:36 2019 No.10954447 File: 2.94 MB, 1910x1069, 420HOPIT.png [View same] [iqdb] [saucenao] [google] >>10954441 based and weedpilled

>>	Anonymous Sat Sep 7 22:25:10 2019 No.10954453 >>10954424 hydrogen, methane, oxygen, ethanol, and tetrahydrocannabinol

>>	Anonymous Sat Sep 7 22:34:00 2019 No.10954472 >>10954441 >>10954447 Drugs will unironically be super valuable off earth.

>>	Anonymous Sat Sep 7 22:39:34 2019 No.10954478 >>10954472 Weed is no harder to grow than any other bulk crop. Only criminalization drives the price. If you're going to Mars, you're bringing hydroponics.

>>	Anonymous Sat Sep 7 22:50:16 2019 No.10954488 >>10954472 If I'm gonna be living on an inhospitable shithole you best be getting me high for my trouble.

>>	Anonymous Sat Sep 7 22:53:01 2019 No.10954492 >>10954488 chances are you're already living in an inhospitable shithole that would be impossible for a human to survive in for at least part of the year without technology.

>>	Anonymous Sat Sep 7 22:54:38 2019 No.10954494 >>10954492 That's true for any part of the Earth, nowhere is safe without some tech.

>>	Anonymous Sat Sep 7 23:15:53 2019 No.10954526 >>10954494 >>10954492 The area I lived in, several hundred years ago, was home to the only food foraging tribal group to advance to the point of a full class system and primitive market economy. The land is so rich they didn't need to learn farming.

>>	Anonymous Sat Sep 7 23:59:50 2019 No.10954633 >>10953604 Wouldn't want it to become a dpt.

>>	Anonymous Sun Sep 8 00:02:07 2019 No.10954637 File: 668 KB, 800x400, dick_shelby02.png [View same] [iqdb] [saucenao] [google] >>10954633 Be careful, you don't want to awaken... "him"...

>>	Anonymous Sun Sep 8 00:05:22 2019 No.10954645 depots

>>	Anonymous Sun Sep 8 00:06:07 2019 No.10954648 >>10954526 A few centuries back, the only people in my area were tribes who benefited from having the purest copper on Earth in abundance around them.

>>	Anonymous Sun Sep 8 00:06:45 2019 No.10954652 File: 621 KB, 840x871, Shelby_cans_welfare.png [View same] [iqdb] [saucenao] [google] >>10954645 OH FUCK NOW YOUVE DONE IT

>>	Anonymous Sun Sep 8 00:30:31 2019 No.10954717 >>10954478 Yeah for sure, that's why weed will probably be the drug of choice for early Martians. Maybe also some nasty alcohol distillation of plant trimmings, although you need a fair amount of sugar so that's not as easy.

>>	Anonymous Sun Sep 8 00:36:25 2019 No.10954732 >>10952939 Lol,the thumbnail looks like a fingerbox collection.

>>	Anonymous Sun Sep 8 01:40:56 2019 No.10954855 >>10954732 Rare Martian fingerboxes

>>	Anonymous Sun Sep 8 05:21:39 2019 No.10955204 >>10952042 It's inefficient, but it's more efficient than you would think. The Orion Drive is a derivative technology of shaped nuclear charges. It's possible to pump about 80% of the energy from a fission detonation in a tight cone.

>>	Anonymous Sun Sep 8 06:56:43 2019 No.10955297 File: 60 KB, 600x450, indian.jpg [View same] [iqdb] [saucenao] [google] Report: Chandrayan-2 lander is located and they're making contact.

Anonymous Sun Sep 8 07:01:00 2019 No.10955309

>>10955297
>We have to find out from the communication data whether it is a soft landing or it is a crash landing. In my opinion, it is not a crash landing because the communication channel is on between the lander and the orbiter. It should be intact. So, let us hope after the analysis done, we may be able to get the final figure
I think ISRO believes the lander may not have crashed and are trying to establish contact.

>>	Anonymous Sun Sep 8 07:01:33 2019 No.10955310 >>10955309 it IS the lunar south pole, they totally could have landed it on the other side of a hill by accident

>>	Anonymous Sun Sep 8 07:01:35 2019 No.10955311 >>10955297 >making contact delusional cope it's dead jim

Anonymous Sun Sep 8 07:03:07 2019 No.10955314

>https://www.firstpost.com/tech/science/chandrayaan-2-live-updates-isro-moon-landing-mission-india-latest-news-orbiter-lander-vikram-rover-pragyan-orbiter-lunar-surface-south-pole-live-status-7304801.html
Live update here. Last update 10 mins ago(if google time conversion is right).

>>	Anonymous Sun Sep 8 07:39:23 2019 No.10955361 >>10955297 >>10955309 Interesting. I mean, if it made a soft landing it was going to be autonomous anyway, losing telemetry doesn't automatically mean the soft landing failed.

>>	Anonymous Sun Sep 8 08:08:41 2019 No.10955392 >>10955309 if you saw the video that scott manely made it went upside down and straighten itself just before landing , it's highly unlikely that they can establish a connection to lander

Anonymous Sun Sep 8 08:24:25 2019 No.10955411
File: 34 KB, 600x450, Bennu_FullGlobe_Rotating_GIF-1024x768[1].gif [View same] [iqdb] [saucenao] [google]

https://www.asteroidmission.org/bennu_fullglobe_rotating_gif/

This three-dimensional view of asteroid Bennu was created by the OSIRIS-REx Laser Altimeter (OLA), contributed by the Canadian Space Agency, on NASA’s OSIRIS-REx spacecraft.

>>	Anonymous Sun Sep 8 08:28:32 2019 No.10955420 File: 31 KB, 594x304, Annotation 2019-09-08 142821.png [View same] [iqdb] [saucenao] [google] cool site about a virtual lunar colony: https://www.moonwards.com/

Anonymous Sun Sep 8 08:31:37 2019 No.10955426
File: 1.02 MB, 3831x2425, Starship-landing-sites-summer-2019-JPL-HiRISE-mosaic-1-c[1].jpg [View same] [iqdb] [saucenao] [google]

A mosaic of six prospective Starship landing site images, taken for SpaceX over the summer of 2019 by NASA’s HiRISE spacecraft

https://www.teslarati.com/spacex-starship-mars-landing-sites-new-nasa-photos/

>>	Anonymous Sun Sep 8 08:37:06 2019 No.10955434 File: 40 KB, 594x388, Annotation 2019-09-08 143654.png [View same] [iqdb] [saucenao] [google] based Elon supports Space Force https://twitter.com/elonmusk/status/1170424775149117440

>>	Anonymous Sun Sep 8 08:39:14 2019 No.10955438 >>10955434 fucking statists need to hang no military in space

>>	Anonymous Sun Sep 8 08:44:27 2019 No.10955450 >>10955438 military funding is crucial to many fundamental technological advances, and spaceflight is no exception

>>	Anonymous Sun Sep 8 08:55:12 2019 No.10955471 >>10955438 Lol the civilization that does (if it ain't the one that deigns to call you a citizen) will make sure your ancestors won't be around to say such bluepilled things

>>	Anonymous Sun Sep 8 08:56:06 2019 No.10955474 >>10955471 I didn't say "no violence in space"

>>	Anonymous Sun Sep 8 09:24:44 2019 No.10955519 File: 1.86 MB, 4096x2732, ED6Tva9XoAErb8z[1].jpg [View same] [iqdb] [saucenao] [google] Cocoa Starship yard looking clean and fresh after the hurricane, and prototype is out of the hangar by now.

>>	Anonymous Sun Sep 8 09:32:17 2019 No.10955540 >>10955519 the best part about hurricanes is that you're forced to clean the yard

Anonymous Sun Sep 8 09:46:37 2019 No.10955571

>>10955438
Its going to happen eventually. Some country is going to make bold claims in space, and the country that does it will be too powerful on Earth to deal with terrestrially. Other nations would have to invest in a space military in some form to protect their assets.

Anonymous Sun Sep 8 10:06:24 2019 No.10955606
File: 273 KB, 1810x1020, EDwET4kU8AINUrW[1].jpg [View same] [iqdb] [saucenao] [google]

New Artemis lunar landing architecture from Zubrin tweet.

The Good: uses distributed lift
The Bad: no orbital refueling or fuel depots, too many elements
The Ugly: SLS

https://twitter.com/robert_zubrin/status/1169814752161234944

>>	Anonymous Sun Sep 8 10:07:24 2019 No.10955610 File: 37 KB, 1152x682, dBA.png [View same] [iqdb] [saucenao] [google] Raptor will be an incredibly quiet rocket engine..

>>	Anonymous Sun Sep 8 10:09:27 2019 No.10955614 >>10955606 >reusable transfer element >no propellant depots The reusable transfer element would require propellant depots of some form I would imagine.

>>	Anonymous Sun Sep 8 10:36:55 2019 No.10955686 >>10951187 the 18m quip on twitter was not a joke, Sea Elon is happening. sea-launch master-race

>>	Anonymous Sun Sep 8 10:37:34 2019 No.10955687 >>10955606 the alternative is 1 SpaceX starship launched via superheavy at a tiny fraction of the cost

Anonymous Sun Sep 8 10:41:49 2019 No.10955700

>>10955687
But the problem with that is that is that Starship can't convert any of it's propellant to just water and nothing else. It leaves behind carbon elements. The SLS (god bless it) with it's environmentally sound hydrolox core stage can convert 100% percent of it's propellant into drinkable water with no extra carbon chemicals.

elon musk bfto.

Anonymous Sun Sep 8 10:42:11 2019 No.10955701

>>10955571
kinetic kill vehicles don't require the military to insert their bureaucracy and bullshit and statist interference into space
>>10955606
>crasher transfer element
I like it
>reusable transfer element
I also like it
crashers are peak oldspace imo, too bad you don't need them to deliver a billion tons to the moon

>>	Anonymous Sun Sep 8 10:53:32 2019 No.10955721 >>10951380 SLS isn't being made out of spare parts.

>>	Anonymous Sun Sep 8 11:11:58 2019 No.10955759 >>10955434 >Space Force is inherently silly to me because I am ignorant as fuck

>>	Anonymous Sun Sep 8 11:13:54 2019 No.10955765 >>10955759 To be fair, Space Force is a silly name.

>>	Anonymous Sun Sep 8 11:20:44 2019 No.10955777 >>10955765 Why tho? I mean, it's just following on 'Air force'. What'd you call it? I guarantee no matter what you pick it'll sound stupid to someone.

>>	Anonymous Sun Sep 8 11:22:05 2019 No.10955779 >>10955777 they're more the Space Corps, conceptually space marines

>>	Anonymous Sun Sep 8 11:23:35 2019 No.10955783 >>10955777 >What'd you call it? Orbital Guard

>>	Anonymous Sun Sep 8 11:24:03 2019 No.10955786 >>10955783 2/5

>>	Anonymous Sun Sep 8 11:24:29 2019 No.10955788 >>10955783 What if a spaceship is not in orbit of anything?

>>	Anonymous Sun Sep 8 11:25:15 2019 No.10955791 >>10955779 Corps is silly, reminds me of corpse

>>	Anonymous Sun Sep 8 11:29:00 2019 No.10955801 >>10955786 5/7

Anonymous Sun Sep 8 11:33:02 2019 No.10955811

>>10955779
>>10955783
those names are memes
no one will take 'space marines' seriously when 99.9999% of the actual force is spy satellites and 'stealth' satellites with jammers and the occasional laser array in mid-Earth orbit. At the very least save space marines for when you have colonized a lot of space and are sending in teams of guys in life support equipment to flush out unlicensed hidey-holes full of space palestinians.

>>	Anonymous Sun Sep 8 11:37:25 2019 No.10955823 >>10955811 >Space Force means Space Shuttle door gunners

>>	Anonymous Sun Sep 8 11:38:34 2019 No.10955828 >>10955788 if it's not in orbit of the earth or moon it's in orbit of the sun, and if it's escaped the sun's orbit you have bigger problems and also it's orbiting the galactic core

>>	Anonymous Sun Sep 8 11:56:15 2019 No.10955872 >>10955777 Space Guard makes more sense to me. >coast guard >national guard meanwhile the only force is >air force

>>	Anonymous Sun Sep 8 11:58:52 2019 No.10955875 >>10955606 >Surface stay 6.5 days Even for a first mission, I feel like they could stay longer than that.

>>	Anonymous Sun Sep 8 12:02:51 2019 No.10955885 >>10955875 Every extra day on the moon NASA has to pay Shelby $13M as "insurance". It's only fair to fund the SLS (god bless it).

>>	Anonymous Sun Sep 8 12:10:14 2019 No.10955903 Should just go with Star Fleet.

>>	Anonymous Sun Sep 8 12:34:44 2019 No.10955989 >>10955823 Starship is the enabling technology for door gunners.

>>	Anonymous Sun Sep 8 12:40:17 2019 No.10956012 >>10955989 >Vietnam joins the moon club by landing a probe in Mare Orientale >a Startship flys from the horizon blasting Fortunate Son on all radio frequencies >"Không lập lại..."

>>	Anonymous Sun Sep 8 12:46:52 2019 No.10956036 >>10955519 Why is thd new rings looks so clean? I can't see no weld line there

>>	Anonymous Sun Sep 8 12:48:26 2019 No.10956041 >>10955610 How tho

>>	Anonymous Sun Sep 8 12:51:36 2019 No.10956051 >>10956036 CONTINUOUS PROCESS IMPROVEMENT

>>	Anonymous Sun Sep 8 12:54:22 2019 No.10956066 >>10956051 What? Starting from a sub-optimal but easy-to-make design, and then iterating on it? No! All rocket designs must be perfect the moment they start flying!

>>	Anonymous Sun Sep 8 13:06:18 2019 No.10956120 >>10956036 >Why is thd new rings looks so clean? I can't see no weld line there Because there's only one. Their steel supplier is providing continuous, constant thickness rolls of steel stock that they cut and shape to the right length.

>>	Anonymous Sun Sep 8 13:12:10 2019 No.10956148 >>10956120 Sounds nice

>>	Anonymous Sun Sep 8 13:21:18 2019 No.10956173 >>10956120 oh yeah baby roll that shit up tight for me

>>	Anonymous Sun Sep 8 13:25:56 2019 No.10956191 >>10955519 >that house so close to the buildingsite Some guy is drinking a beer in his backyard pool while he sees a rocket getting bigger everyday.

>>	Anonymous Sun Sep 8 13:33:33 2019 No.10956215 >>10955471 >ancestors anon, i...

>>	Anonymous Sun Sep 8 13:38:20 2019 No.10956228 File: 714 KB, 1492x1241, 16B62F76-C844-48EC-88FA-2B07E2A4BCA1.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sun Sep 8 13:40:53 2019 No.10956239 >>10956228 good shit

>>	Anonymous Sun Sep 8 14:30:31 2019 No.10956373 >>10956228 it's fucking hilarious that SpaceX are going to finally launch a Nova class vehicle from LC-39A, and instead of using the existing Nova class pad they're going to build a milkstool off to the side and launch from that

>>	Anonymous Sun Sep 8 14:33:34 2019 No.10956383 >>10956373 its a little cuckstool

>>	Anonymous Sun Sep 8 14:34:20 2019 No.10956385 >>10955686 Put that boner away, it's not going to be stupidly bobbing in the water like Sea Dragon. The gulf already has platform oil wells, so there shouldn't be any problem getting a proper fixed platform built.

>>	Anonymous Sun Sep 8 14:35:57 2019 No.10956387 >>10956383 no, the milkstool for the full up stack to launch the biggest rocket ever made

Anonymous Sun Sep 8 14:39:28 2019 No.10956398
File: 70 KB, 600x472, x33.jpg [View same] [iqdb] [saucenao] [google]

>going to replace the Shuttle
>would use composite tanks for hydrogen
>composite tanks aren't working
>use aluminium tanks
>they're actually lighter and better than composite
>"derp if you don't use composites then the project will be deemed a failure herp"
>no progress is made because composite tanks aren't working right away
>cancelled
>later composites are figured out

I'm thinking that NASA (or whoever was in control of it at the time) didn't want to replace the Shuttle, but it was clear that the Shuttle needed to be replaced. So a mockery of a project was set up to fail so that NASA would have an excuse to keep flying the Shuttle. They picked the most ambitious proposal since it would be the most likely to fail, but then the project was actually making headway. So they had to force the program to fail.

Anonymous Sun Sep 8 14:44:17 2019 No.10956411
File: 365 KB, 512x640, saturnib_milkstool.jpg [View same] [iqdb] [saucenao] [google]

>>10956383
No. The milkstool was based. It was a simple and elegant solution to the problem of trying to fit a rocket to a launch tower that's too tall for it. If NASA of today tried to do something like that, they would waste a couple billion dollars and maybe a decade to come up with some overly complicated solution that doesn't even work well.

Hell, they can't even design a launch tower that's for the correct size of rocket right. As the SLS launch tower has it's own issues that are so bad that it's only going to be used for one launch. NASA has invented expendable launch towers.

>>	Anonymous Sun Sep 8 14:47:22 2019 No.10956423 >>10956411 >expendable towers excuse me

>>	Anonymous Sun Sep 8 14:48:30 2019 No.10956428 >>10956423 https://arstechnica.com/science/2018/02/nasa-spends-1-billion-for-a-launch-tower-that-leans-may-only-be-used-once/

>>	Anonymous Sun Sep 8 14:54:05 2019 No.10956445 >>10956423 delightfully counterintuitive

Anonymous Sun Sep 8 14:57:12 2019 No.10956455

>>10956423
Launch tower reusability doesn't make sense to a government-backed rocket company— jobs. Let us say we had ten guaranteed launches per year and we had a tower which we can use ten times—we would build exactly one tower per year. That makes no sense. You can't tell the teams: 'Goodbye, see you next year!'.

>>	Anonymous Sun Sep 8 14:58:05 2019 No.10956459 What's the point of 2 DSKYs in the apollo command module?

>>	Anonymous Sun Sep 8 15:04:14 2019 No.10956476 File: 778 KB, 1280x1920, super_heavy_estimation.jpg [View same] [iqdb] [saucenao] [google] Assuming an average male human height of 1,71 meters, Super Heavy launcher is now 32 meters tall

>>	Anonymous Sun Sep 8 15:09:29 2019 No.10956487 >>10956476 You could always use a no-assumption method based on the vehicle being nine meters in diameter.

>>	Anonymous Sun Sep 8 15:18:26 2019 No.10956509 >>10956476 >Super Heavy launcher Isn't that Starship MK1 though?

>>	Anonymous Sun Sep 8 15:19:35 2019 No.10956512 >>10956509 the names are terrible imo. The booster should be called Starlauncher, and the second stage Starship

>>	Anonymous Sun Sep 8 15:20:12 2019 No.10956515 >>10956509 You are correct. They're building the ship/second stage.

>>	Anonymous Sun Sep 8 15:24:48 2019 No.10956530 >>10956455 Fucking kek

>>	Anonymous Sun Sep 8 15:32:31 2019 No.10956549 >>10956428 Holy shit. What a clusterfuck

>>	Anonymous Sun Sep 8 15:38:53 2019 No.10956563 >>10956428 Just give the crew harnesses and make them scale a fucking repurposed TV antenna tower, it'd cost like $100.

Anonymous Sun Sep 8 15:47:46 2019 No.10956592

>>10956549
Indeed. And remember that supposedly the SLS has been ready for it's green run at Stennis since before the first flight of the Falcon Heavy.

>>10956563
The amount of safety paperwork needed for that would probably add another year or two to the SLS launch schedule.

>>	Anonymous Sun Sep 8 16:00:46 2019 No.10956624 >>10956592 >the SLS has been ready for it's green run at Stennis since before the first flight of the Falcon Heavy. Yep, I know. Although I have no idea what they are waiting for, paperwork? Are there any official words about this?

>>	Anonymous Sun Sep 8 16:03:06 2019 No.10956631 >>10955606 If this clusterfuck is the future of spaceflight then there is no future. Thank fuck for SpaceX.

>>	Anonymous Sun Sep 8 16:13:47 2019 No.10956660 >>10956624 I don't think anyone knows. There's speculation of paperwork but thats all.

>>	Anonymous Sun Sep 8 16:14:38 2019 No.10956664 >>10956215 >He doesn't know about the zombie uprising of 2054 The event will make previous allegations of voter fraud look like a fucking joke.

>>	Anonymous Sun Sep 8 16:20:24 2019 No.10956680 >>10956631 Imagine if NASA of today tried to manage Apollo back then, we would be lucky to see Apollo 8 by the 80s.

>>	Anonymous Sun Sep 8 16:23:25 2019 No.10956687 >>10956041 on word: efficiency raptor is the most efficient motor ever made. thats means it doesn't make barp noises but lift, noise is just wasted energy

>>	Anonymous Sun Sep 8 16:26:08 2019 No.10956697 >>10956041 less afterburning

>>	Anonymous Sun Sep 8 16:31:38 2019 No.10956711 petition to rename superheavy to "yeetus maximus"

>>	Anonymous Sun Sep 8 16:32:43 2019 No.10956715 >>10956398 and the army stepped in to fund the project and US gov blocked that too. They really did not want this thing to fly. After all these years we still dont know outside of simulations if aerospikes are good idea.

>>	Anonymous Sun Sep 8 16:33:27 2019 No.10956719 Big Yeety

>>	Anonymous Sun Sep 8 16:33:54 2019 No.10956720 >>10956715 If I was more conspiracy minded I'd suggest the US government has an agreement with the Ayys to keep us bound to Earth

>>	Anonymous Sun Sep 8 16:38:26 2019 No.10956728 >>10956720 I want a wayyfu

>>	Anonymous Sun Sep 8 16:38:55 2019 No.10956730 >>10956728 ayylmao

>>	Anonymous Sun Sep 8 17:03:09 2019 No.10956790 >>10956512 Starship Launch System

>>	Anonymous Sun Sep 8 17:34:47 2019 No.10956868 File: 26 KB, 248x1040, Starship Launch System.jpg [View same] [iqdb] [saucenao] [google] >>10956790 >"See? We told you it'd fly eventually!"

>>	Anonymous Sun Sep 8 17:46:38 2019 No.10956901 >>10956868 We're gonna do the green run in orbit, just for safety's sake

Anonymous Sun Sep 8 17:58:38 2019 No.10956941

>>10956428
>These trade studies found that modifying the existing mobile launcher would cost $54 million, modifying the Space Shuttle Mobile Launcher Platforms would cost $93 million, and constructing a new mobile launch platform would cost $122 million. Ultimately, the agency opted for the lowest-cost option—modifying the Ares mobile launcher—but unfortunately those preliminary cost estimates turned out to be wildly optimistic.
You know, people talk about Elon time and that turned out to be quite useful. We all know by now that to calculate Elon time, you simply take the estimate, multiply it by the length of a mars year, then divide by the length of an earth year.
And that yields quite decent results we can use in our day-to-day lives.

But I think what would be even more useful is the NASA Dollar. Judging by real world evidence, I'd expect the Nasa dollar to be worth between 15 and 20 not-aerospace-certified, regular dollars. However I haven't quite nailed down the exact formula leading to this value quite yet.

>>	Anonymous Sun Sep 8 17:59:39 2019 No.10956945 >>10956455 I love you.

>>	Anonymous Sun Sep 8 18:15:27 2019 No.10956988 >>10956941 You have nasa dollars, then you have SLS dollars.

>>	Anonymous Sun Sep 8 18:22:14 2019 No.10957002 >>10956428 I swear Nasa is just getting exponentially more inefficient every year at this point. It's like the pork has reached critical mass. I'm looking forward to 2030 when they're down to demanding 10% of the US budget to launch a sounding rocket.

>>	Anonymous Sun Sep 8 18:28:40 2019 No.10957025 >>10957002 >a sounding rocket. Which would be a Space Shuttle SRB being launched of an expendable launchpad.

>>	Anonymous Sun Sep 8 18:29:01 2019 No.10957027 >>10956988 How do SLS dollars compare to James Webb dollars?

>>	Anonymous Sun Sep 8 18:29:34 2019 No.10957029 >>10957002 >With SLS 95% complete, we've decided to go a new direction and scrap the whole thing. Could we get an additional $50billion for researching the new replacement program? We should have some plans finalized by 2039

>>	Anonymous Sun Sep 8 19:06:00 2019 No.10957124 File: 31 KB, 248x455, James Webb Space Telescope.jpg [View same] [iqdb] [saucenao] [google] >>10957027 The SLS can't even come close in dollars per kek.

Anonymous Sun Sep 8 19:18:33 2019 No.10957161
File: 20 KB, 680x680, 1429206752681.jpg [View same] [iqdb] [saucenao] [google]

>>10957124

>That timeline slippage and costs increase.

WHAT THE FUCK?!?! MORE THEN 20 TIMES THE ORIGINAL COSTS, MORE THEN 20 YEARS LATER AND 14 YEARS DELAY IN LAUNCH??!?!?!?!?!

HOW THE FUCK IS THIS SHIT ALLOWED?????!!!!!!

>>	Anonymous Sun Sep 8 19:27:07 2019 No.10957185 File: 692 KB, 800x472, obsidian-knight-versus-tau-e1448215940907.png [View same] [iqdb] [saucenao] [google] >>10955434 Space Force will sound silly to normies.. until the first Ayy come's knocking.

>>	Anonymous Sun Sep 8 19:27:24 2019 No.10957186 >>10957161 Think about this: JWST is older than many anons you post alongside.

Anonymous Sun Sep 8 19:27:47 2019 No.10957187

>>10957161
This is what happens when the congress and government, led by short time goals, controls NASA. Every president want a project completed in his term, not in next president's term because then the next president will take all the credit. This is the result of constant switching of projects and plans.

>>	Anonymous Sun Sep 8 19:39:16 2019 No.10957236 >>10957161 Probably because so little has happened in spaceflight since Apollo that the public is used to not much happening. So a project getting delayed and having a little extra money added to it's budget doesn't seem so bad.

>>	Anonymous Sun Sep 8 19:43:39 2019 No.10957252 >>10956398 The Bush administration wasn't going to let a rocket built during the clinton/gore era launch.

>>	Anonymous Sun Sep 8 19:47:02 2019 No.10957262 >>10957252 Any president who cancels a project simply because his opponent started it should be impeached because obviously doesn't meet the age requirement to be president on account of him acting like a child.

>>	Anonymous Sun Sep 8 19:48:48 2019 No.10957268 >>10957262 most presidents do that. its a funding thing.

Anonymous Sun Sep 8 19:51:55 2019 No.10957277
File: 190 KB, 960x612, starship phase 1.jpg [View same] [iqdb] [saucenao] [google]

Time for some late leaks.
>A "Phase 1" construction layout for Starship. (The underground water tank was swapped for three above-ground tanks.)
>Phase 1: Tests of ground systems and fueling, a handful of rocket engine test-firings, and several "small hops" of a few centimeters off the ground.

>>	Anonymous Sun Sep 8 19:53:17 2019 No.10957282 >>10957277 This report was released a couple days ago

Anonymous Sun Sep 8 19:54:00 2019 No.10957286
File: 41 KB, 750x344, starship phase 2.jpg [View same] [iqdb] [saucenao] [google]

>>10957277
>A "Phase 2" layout for Starship's launch site from the Federal Aviation Administration's written reevaluation.
>Phase 2: Several more "small hops" of Starship, though up to 492 feet (150 meters) in altitude, and later "medium hops" to about 1.9 miles (3 kilometers).

>>	Anonymous Sun Sep 8 20:03:54 2019 No.10957308 File: 13 KB, 210x240, 1437148346811.jpg [View same] [iqdb] [saucenao] [google] >>10957277 >>10957286

>>	Anonymous Sun Sep 8 20:07:32 2019 No.10957318 File: 152 KB, 1024x857, Ares-V.jpg [View same] [iqdb] [saucenao] [google] NASA just announced the Constellation program! We're going back to the moon! The Ares V looks pretty good too.

>>	Anonymous Sun Sep 8 20:24:07 2019 No.10957386 File: 58 KB, 407x540, 42-22702588.jpg [View same] [iqdb] [saucenao] [google] >>10951380 Germans

>>	Anonymous Sun Sep 8 20:38:52 2019 No.10957423 >>10956455 Based ESA philosophy

>>	Anonymous Sun Sep 8 20:44:25 2019 No.10957432 >>10957423 More like Ariane, but close enough I guess.

>>	Anonymous Sun Sep 8 22:31:12 2019 No.10957694 File: 1.28 MB, 741x1458, playhopper.png [View same] [iqdb] [saucenao] [google] >>10954472 Either that or strippers.

>>	Anonymous Sun Sep 8 23:21:24 2019 No.10957796 >>10957318 What's the difference between Ares V and SLS?

>>	Anonymous Sun Sep 8 23:22:56 2019 No.10957801 >>10957796 Not much. Most variants of the Ares V uses 5 to 6 R-68s. The SLS uses 4 SSMEs (a.k.a. RS-25). That's about it really.

>>	Anonymous Sun Sep 8 23:34:05 2019 No.10957821 >>10957801 Ares V had a 10m diameter core and twin j2x upper stage

>>	Anonymous Sun Sep 8 23:39:10 2019 No.10957828 >>10957796 One isn't a massive fuckup.

>>	Anonymous Mon Sep 9 00:16:45 2019 No.10957871 >>10956687 raptor may be quiet individually, but the full retard quantity on super heavy will ruin that

>>	Anonymous Mon Sep 9 08:06:09 2019 No.10958414 >>10957871 nope

>>	Anonymous Mon Sep 9 08:09:35 2019 No.10958423 File: 28 KB, 807x246, file.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Mon Sep 9 11:06:10 2019 No.10958796 >>10958423 No. Earth radius is 6371 km.

>>	Anonymous Mon Sep 9 11:26:15 2019 No.10958853 >>10958796 look, the guy's A. full of shit and B. a schizo, but that doesn't stop 6,367 km from being within the error bars on the radius of Terra

>>	Anonymous Mon Sep 9 11:45:51 2019 No.10958900 >>10958853 No. Earth radius is 6371 km.

Anonymous Mon Sep 9 11:47:04 2019 No.10958904

>>10958423
>>10958853
I haven't looked through his derivation, but it seems like maybe he has found some equation that can simply to describe a sphere in gravitational hydrostatic equilibrium (i.e. something thats pulling itself into a sphere due to its own gravity). Either that or by chance he found an equation that, while itself doesn't mean anything, by coincidence gives a length that's close to the mean radius of Earth.

>>	Anonymous Mon Sep 9 11:48:06 2019 No.10958906 >>10958904 >that can SIMPLIFY typo correction

Anonymous Mon Sep 9 11:49:35 2019 No.10958911
File: 4 KB, 1064x36, file.png [View same] [iqdb] [saucenao] [google]

>>10958900
pic related
there's also a few others that are more geometric and abstract but are all roughly the same
>>10958904
I think it's bullshit that comes out to the mean radius of the Earth

>>	Anonymous Mon Sep 9 11:51:24 2019 No.10958915 >>10958900 Is it REALLY 6367.0000000000... km exactly? HMMMM?

Anonymous Mon Sep 9 12:17:44 2019 No.10958962

>>10958911
>I think it's bullshit that comes out to the mean radius of the Earth
It's just like the kooks who keep searching for ways to get the letters in somebody's name to come up as 666 or something. Never mind that the alphabet and the order of letters in it is completely arbitrary anyhow.
>If you make A=26 and Z=1 on every other letter, his name adds up to the number of the beast!
Now what does that gay shit have to do with space flight?

>>	Anonymous Mon Sep 9 12:51:08 2019 No.10959052 Any date on the SLS green run? I couldn't find an exact date only "sometime next year". I thought the core stage was already done?

>>	Anonymous Mon Sep 9 12:51:49 2019 No.10959056 >>10959052 the core stage has been sitting at the green run test stand, ready to go, for years

>>	Anonymous Mon Sep 9 12:53:44 2019 No.10959069 >>10959056 Really? I thought the core was done this year and is sitting in Michoud?

>>	Anonymous Mon Sep 9 13:11:53 2019 No.10959119 File: 49 KB, 300x300, 1544848056302.jpg [View same] [iqdb] [saucenao] [google] >>10959056 some say it's been there for as long as time itself

>>	Anonymous Mon Sep 9 13:17:51 2019 No.10959130 >>10959119 An enigmatic remnant of a bygone era. What was it for? We may never know.

>>	Anonymous Mon Sep 9 13:18:22 2019 No.10959134 >>10959056 I've seen it at Michoud. SLS is real. Starship is nothing more than bunch of water tower steels bolted together. Its not real. Rocketry is hard.

>>	Anonymous Mon Sep 9 13:43:15 2019 No.10959195 >>10959056 Boeing finished the engine section of the core stage around a month ago, stop lying.

>>	Anonymous Mon Sep 9 13:45:34 2019 No.10959205 >>10959195 I can't believe they've been waiting to do this green run test for a decade

Anonymous Mon Sep 9 13:50:39 2019 No.10959222

>>10959205
I'm struggling to understand why it took them so long other than intentional wrecking or sheer incompetence. I understand taking longer than orginally predicted (Elon time is a thing because of stuff like that), but a whole decade to make the test article of a rocket seems ridiculous.

>>	Anonymous Mon Sep 9 14:46:51 2019 No.10959345 >>10959222 it's totally a safety thing >>10953275

>>	Anonymous Mon Sep 9 16:04:45 2019 No.10959491 DEAR STARSHIP ABORT FUD POSTER, https://twitter.com/elonmusk/status/1171124402726899712 SINCERELY, ANONYMOUS

>>	Anonymous Mon Sep 9 16:07:36 2019 No.10959495 >>10959491 tbf he also goes on to say there's no plans for launch escape on early starship but "maybe we should think about it"

>>	Anonymous Mon Sep 9 16:10:55 2019 No.10959501 >>10959495 https://twitter.com/elonmusk/status/1171125683327651840?s=20 dual bell + hull damped/reinforced nozzles to lift a laden starship I think you need... seven raptors?

>>	Anonymous Mon Sep 9 17:01:41 2019 No.10959633 Getting really tired of not being able to read elons Twitter without the estronaut shitting up every single fucking post with gay shit and fishing for tidbits to make a video out of.

>>	Anonymous Mon Sep 9 17:03:32 2019 No.10959638 >>10959633 why estronaut?

>>	Anonymous Mon Sep 9 17:04:15 2019 No.10959639 >>10959638 the man's a fag

>>	Anonymous Mon Sep 9 17:04:39 2019 No.10959641 >>10959639 >fag why the homophobia?

>>	Anonymous Mon Sep 9 17:04:57 2019 No.10959642 >>10959501 >dual bell vacuum engine interdasting

Anonymous Mon Sep 9 17:05:10 2019 No.10959643

>>10959495
They'd better start thinking about it soon, because we can't afford to lose any AMERICANS on this private pipe bomb. Only LEGACY companies have the experience to be flying AMERICANS with the required amount of SAFETY.
>>10959633
>estronaut
kek, fuck that homo his streams are insufferable

>>	Anonymous Mon Sep 9 17:06:31 2019 No.10959649 >>10959501 >Firing vaccuum bells in atmo Ohnononononono

>>	Anonymous Mon Sep 9 17:07:23 2019 No.10959651 >>10959641 Where do you think we are?

>>	Anonymous Mon Sep 9 17:10:01 2019 No.10959659 >>10959651 Newfag detected

>>	Anonymous Mon Sep 9 17:11:36 2019 No.10959666 >>10959649 >Ohnononononono The flow separation will be buffered by the launch vehicle body, which the engine bells will be affixed to.

>>	Anonymous Mon Sep 9 17:15:40 2019 No.10959679 >>10959649 dual bell solves the flow seperation problem

>>	Anonymous Mon Sep 9 17:16:00 2019 No.10959680 >>10959666 Maybe, still pressing X to doubt until I see it in action.

>>	Anonymous Mon Sep 9 17:17:34 2019 No.10959685 >>10959495 Just open the door and jump out.

>>	Anonymous Mon Sep 9 17:18:36 2019 No.10959687 >>10959685 Starship door gunners when

Anonymous Mon Sep 9 17:22:30 2019 No.10959697

>>10959643
>They'd better start thinking about it soon, because we can't afford to lose any AMERICANS on this private pipe bomb. Only LEGACY companies have the experience to be flying AMERICANS with the required amount of SAFETY.
Only legacy management should be allowed to kill people and get away with it.

>>	Anonymous Mon Sep 9 17:24:56 2019 No.10959701 >>10959685 >Jumps out the door with parachute on at mach 12 >WHARBLGHARBLAAAAAAAAA

>>	Anonymous Mon Sep 9 17:27:12 2019 No.10959704 File: 47 KB, 680x640, 1565275480523.jpg [View same] [iqdb] [saucenao] [google] >>10959651 homophobia is never justified, no matter the place!

>>	Anonymous Mon Sep 9 17:33:04 2019 No.10959712 >>10959701 america developed some nifty escape systems for high speed bombers

>>	Anonymous Mon Sep 9 17:37:51 2019 No.10959719 >>10959712 don't forget MOOSE

>>	Anonymous Mon Sep 9 17:52:31 2019 No.10959749 >>10959704 Wanton degeneracy is an obstacle to spaceflight.

>>	Anonymous Mon Sep 9 17:55:14 2019 No.10959759 >>10959749 condoms and lube is easier than an abortion in space

>>	Anonymous Mon Sep 9 18:05:19 2019 No.10959801 >>10959759 >abortion What did I just say about wanton degeneracy, Anon?

>>	Anonymous Mon Sep 9 18:05:27 2019 No.10959802 >https://www.youtube.com/watch?v=SeePs8N16KE

Anonymous Mon Sep 9 18:06:02 2019 No.10959805
File: 238 KB, 715x402, 117ad4b4012b9952850c175e967c4e3c_L.jpg [View same] [iqdb] [saucenao] [google]

How much did the Aeolus maneuver really cost? Would the proposed automated algorithm take into account the amount of propellant in each craft? Seems like the optimal, unbiased operational procedure would keep the maximum amount of satellites in orbit as possible. Or will there be "right-of-way" licenses like how the lottery donates to education.

>>	Anonymous Mon Sep 9 18:10:27 2019 No.10959824 >>10959801 in zero g, I would say that degeneracy is preferable to doing jello baby science on live test subjects

>>	Anonymous Mon Sep 9 18:21:14 2019 No.10959859 >>10959824 Figuring out what goes wrong is the only way to know what needs to be fixed for things to go right.

>>	Anonymous Mon Sep 9 18:21:59 2019 No.10959864 >>10959859 literally think of the children

>>	Anonymous Mon Sep 9 18:25:59 2019 No.10959876 >>10959864 I know, it's gonna be hilarious.

>>	Anonymous Mon Sep 9 18:26:32 2019 No.10959879 >>10959864 You can think and do at the same time. Otherwise, if you only think about and don't do it, you'll be stuck like NASA was and have no human spaceflight on another planetary body for the next million years.

>>	Anonymous Mon Sep 9 18:27:32 2019 No.10959882 >>10959879 okay, as long as we can agree that no pregnancy in zero g

>>	Anonymous Mon Sep 9 18:28:30 2019 No.10959884 >>10959882 You're free to not do so, but it will happen regardless. The point is whether it should be done in controlled environment or done by space teens fooling around.

>>	Anonymous Mon Sep 9 18:29:01 2019 No.10959886 >>10959882 Well someone's gotta try it ventilation, right? Have there been animal tests in 0g? Seems like flying a few mice to the ISS and letting em fuck wouldn't be too difficult.

>>	Anonymous Mon Sep 9 18:30:04 2019 No.10959891 >>10959886 *eventually Autocorrect what are you doing

>>	Anonymous Mon Sep 9 18:30:20 2019 No.10959893 >>10959886 >>10959884 yeah, it's going to happen, and it's probably going to suck I have a hunch that Mars will be fine but micro is going to fuck shit up

>>	Anonymous Mon Sep 9 18:40:32 2019 No.10959922 File: 324 KB, 550x428, EECvuq-WkAAjglY.png [View same] [iqdb] [saucenao] [google] >>10959649

>>	Anonymous Mon Sep 9 18:46:26 2019 No.10959935 >>10959922 what's the drawback for dual bell again? is it a performance hit or a weight hit?

>>	Anonymous Mon Sep 9 18:47:32 2019 No.10959937 >>10959935 Weird transient flow characteristics as the flame front advances across the geometry change.

>>	Anonymous Mon Sep 9 18:48:20 2019 No.10959942 >>10959937 oh? tell me more

>>	Anonymous Mon Sep 9 18:53:51 2019 No.10959954 >>10959942 That's about it (at least I couldn't find anything). It's just one of those neat ideas of spaceflight that hasn't really been looked into because it doesn't really fit the traditional paradigm of launchers.

>>	Anonymous Mon Sep 9 18:54:44 2019 No.10959958 >>10959942 https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140011268.pdf

>>	Anonymous Mon Sep 9 19:29:12 2019 No.10960083 Who's the idiot who set up that new /sfg/? Your selection of edition sucks.

>>	Anonymous Mon Sep 9 19:37:13 2019 No.10960109 new thread not inexplicably made by a chubby chasing faggot >>10960107

>>	Anonymous Mon Sep 9 19:41:49 2019 No.10960127 File: 10 KB, 259x194, 1449673369605.jpg [View same] [iqdb] [saucenao] [google] >>10960083 >>10960109 >page 4

>>	Anonymous Mon Sep 9 19:42:49 2019 No.10960129 >>10960127 At least >>10960107 isn't a shit edition.

>>	Anonymous Mon Sep 9 20:11:45 2019 No.10960222 >actually physically and mentally disabled mod deletes the real general full of discussion every day /sci/ becomes more and more worthless, mods are literal niggers

>>	Anonymous Mon Sep 9 20:12:15 2019 No.10960223 >janny deletes both of them instead of just the low effort troll thread

Anonymous Mon Sep 9 20:12:51 2019 No.10960227

>>10951380
We need more professional autists with a passion for rocketry but also enough brain capacity left over to behave professionally and interact with other real human beings, which excludes most of us, and we're more interested in shipping in third worlders rather than krauts, so the professional autism isn't there anymore. On top of that our government has suffered significant bloat since the 50's, as a result Slut Launch System is a fucking mess.

>>	Anonymous Mon Sep 9 20:13:39 2019 No.10960229 >>10960223 The proper response was to report and ignore, not fight faggotry with faggotry.

>>	Anonymous Mon Sep 9 20:36:19 2019 No.10960288 >>10960229 We still need a new thread you daft shit

>>	Anonymous Mon Sep 9 20:37:28 2019 No.10960293 >>10960288 Not until tomorrow we don't

>>	Anonymous Mon Sep 9 20:43:06 2019 No.10960306 >>10960229 jannicuck should have either merged the discussion from the new thread into this one or deleted the old thread and left the new one, the new thread had actual space discussion and this one is just bitching about threads

>>	Anonymous Mon Sep 9 20:46:28 2019 No.10960316 so what the hell is the actual story with the poo in the lunar lander? I read they found it, is it actually intact? indian english is so fucking stupid it innately triggers my fake news sensibilities

Anonymous Mon Sep 9 20:50:48 2019 No.10960328

>>10960316
From what I can gather...
>on the final kilometers of landing the lander did a flip
>which made it lose connection with ground control
>no biggie the lander is automated
>it lands itself near where it was supposed to
>it's in one piece but it's refusing to respond
>a typical response to Indians desperately trying to message you

>>	Anonymous Mon Sep 9 20:53:20 2019 No.10960334 >>10960328 interesting, that's close to what I was thinking as well, thanks.

>>	Anonymous Mon Sep 9 21:02:01 2019 No.10960366 >>10960328 It's finally where the poo in loos won't get to it.

>>	Anonymous Mon Sep 9 21:15:28 2019 No.10960400 >>10953651 Silver soldering wire or online?

Anonymous Mon Sep 9 21:22:31 2019 No.10960416

>>10960400
Some kind of silver wire to weave into some kind of shape for the catalyst. I prefer getting it in-person as my address is not permanent due to moving from apartment to apartment between semesters. I was thinking a yard of wire should be enough for one 5 second test burn.

>>	Anonymous Mon Sep 9 21:52:34 2019 No.10960481 >>10955783 >>10955777 >>10955765 The obvious answer is to call it the Navy... If the UN ever gets serious we could have the UNEN or United Nations of Earth Navy.

>>	Anonymous Mon Sep 9 21:54:18 2019 No.10960490 >>10959935 Second stage

Anonymous Mon Sep 9 21:57:17 2019 No.10960498
File: 525 KB, 1280x720, usaf_sword.png [View same] [iqdb] [saucenao] [google]

>>10960481
I think any proposed name will seem odd because it will inevitably be associated with Sci-Fi and thus looks unprofessional. Unless it got named something boring like Space Security Office.

>>	Anonymous Mon Sep 9 22:02:08 2019 No.10960505 >>10960416 I don't know if it has to be pure but your nearest hardware store should have silver solder. Which can be up to 99.3 or down to 30% silver. The rest Cu, Zn, An, or Cd.

>>	Anonymous Mon Sep 9 22:04:04 2019 No.10960510 >>10960481 Imagine Armed DreamChaser doing ground support for UN troops in Africa

Anonymous Mon Sep 9 22:09:19 2019 No.10960517

>>10960505
https://www.nrcresearchpress.com/doi/pdf/10.1139/v59-080
Based on this paper I'm using (hopefully the link works) an alloy of silver and calcium works best, but I don't think I can easily buy that in a wire or a sheet. So pure silver will have to do.

Anonymous Mon Sep 9 22:22:14 2019 No.10960535

>>10955606
Why the fuck would you want to get so complicated with this shit? Falcon Heavy's maximum possible LEO payload is 63,800kg or 19,238kg more than a fully fueled Apollo stack (CM+SM+LM), which is plenty of mass left over for say an extra thicc fairing to put it in, and a significant increase in the size of the vehicle. The SLA fairing that shielded the LM and the SM's engine was only 1840kg, even if we assume a significantly larger fairing you could still make the payload 10-15000kg heavier (more space, more propellant, more supplies, etc) and still scrape under the maximum payload capacity. If conditions are good and your launch is clean then you could get that whole AE/DE/TE up to LEO fully fueled in a single launch.

>>	Anonymous Mon Sep 9 22:26:37 2019 No.10960546 >>10960535 Why would you get even that complicated? Just send a Starship.

>>	Anonymous Mon Sep 9 22:28:35 2019 No.10960552 File: 51 KB, 702x336, Richard-Shelby-702x336.jpg [View same] [iqdb] [saucenao] [google] >>10960535 exCUSE me at WHAT POINT does this frankly UNAMERICAN concept stop at rhe GATEWAY?

>>	Anonymous Mon Sep 9 22:30:11 2019 No.10960556 >>10955606 lol I hadn't really thought of this but that Orion mission profile could be done by Soyuz or Dragon easily with zero modification, you're launching SLS for a job a literal Soyuz can do

>>	Anonymous Mon Sep 9 22:32:01 2019 No.10960560 >>10960556 >that Orion mission profile could be done by Soyuz or Dragon easily with zero modification IIRC, Soyuz and Dragon (or Dragon 2 at least) lacks the life support systems and radiation shielding necessary for an Orion mission.

>>	Anonymous Mon Sep 9 22:32:48 2019 No.10960564 >>10960517 Your using N2O right should be cheap enough to just tryout while you wait for the pure silver.

Anonymous Mon Sep 9 22:35:32 2019 No.10960575

>>10960560
Sure, for a full length Orion mission to orbit the Moon for a week, Soyuz would be out and Dragon would be stretched. But the Zubrin proposal is a two day jaunt to NRHO, followed by transfer to a different craft. If you resupplied Soyuz from gateway, it could do that mission.

>>	Anonymous Mon Sep 9 22:40:12 2019 No.10960586 >>10960552 I like this meme.

Anonymous Mon Sep 9 22:40:45 2019 No.10960587

>>10960564
But then I need a way to start the decomposition. One of the things I want to test for is a self sustaining decomposition, so the catalyst doesn't need to be massive. Having a silver mesh was the easiest way to have such a catalyst. The other option would be using a spark plug in the chamber, but that would require modification of the chamber.

Anonymous Mon Sep 9 22:41:48 2019 No.10960591

https://mobile.twitter.com/elonmusk/status/1171161289105653761

Elon outlines Starship pad abort system. Instead of trying to escape, just tank the fireball and light the engines. As long as Starship doesn't fall back to the pad, it'll be fine. It's not the explosion that kills you, it's falling over.

>>	Anonymous Mon Sep 9 22:44:21 2019 No.10960598 >>10960591 Someone refresh my memory, can Starship achieve >1 TWR while fully loaded?

Anonymous Mon Sep 9 22:45:42 2019 No.10960602
File: 2.99 MB, 640x360, Screw this one up, and we'll both be 6 feet under.webm [View same] [iqdb] [saucenao] [google]

https://www.youtube.com/watch?v=WPxE4Sli2fk
BBC went to see beady eyed Branson's spaceport.
First half is quite nice with an interview with the chief pilot and some launch footage. Second half turned into a bit of a daft environment/rich people are evil for going to space virtue signal.

>>	Anonymous Mon Sep 9 22:47:58 2019 No.10960606 >>10960598 Yes, but you'd have to fire the vacuum engines. So we're back to double bell nozzles.

Anonymous Mon Sep 9 22:47:58 2019 No.10960607

>>10960546
Just to work with the launchers in the image, you could probably get the same amount of shit done with two Falcon Heavies, one to carry the entire lunar vehicle to LEO, the other to carry an expando-hab and propulsion bus to LEO. A single B330 or roughly equivalent hab would have double, DOUBLE the pressurized usable volume of Shitway while being better protected from impacts and better shielded from radiation. With a slightly larger fairing you could use FH to launch the entire B330 module to GTO with mass to spare, so I guess call it three FH launches so you could attach a service and propulsion module to the habitat. If you launched some kind of intermediate 165m^3 expando-hab you'd still outsize the Shitway and you could probably cram the service/propulsion bus into that second launch.

>>	Anonymous Mon Sep 9 22:49:04 2019 No.10960614 >>10960598 >>10960606 also there's no way in hell a Staryeeter / Startanker could do a pad abort, but if you've got humans on a Staryeeter they must have snuck aboard somehow.

>>	Anonymous Mon Sep 9 22:49:12 2019 No.10960615 >>10960602 Jesus Christ what a filthy burning engine, what the fuck is that an SRB?

>>	Anonymous Mon Sep 9 22:50:07 2019 No.10960619 >>10960615 iirc it's a hybrid motor burning some meme fuel like rubber

>>	Anonymous Mon Sep 9 22:50:17 2019 No.10960621 >>10960587 My bad was suggesting you test the silver solder while waiting for the pure silver. Drilling and taping a hole is not to hard. How do you plan on mounting the silver in the bell housing?

>>	Anonymous Mon Sep 9 22:51:34 2019 No.10960626 >>10960619 >>10960615 looked it up, wikipedia says polyamide plastic and nitrous oxide

Anonymous Mon Sep 9 22:55:51 2019 No.10960643

If you grafted a MiG 21 to the top of a Zenit and strapped SRBs under the wings you'd unironically have a more capable rocket than SpaceShip Two. What the fuck has Branson been doing for almost 20 years? Virgin Galactic was founded two years after SpaceX, and they can't even compete with Falcon 1.

Anonymous Mon Sep 9 22:57:25 2019 No.10960649

>>10960621
>My bad was suggesting you test the silver solder while waiting for the pure silver.
That makes sense. I'll look into it. I might borrow something from the electrical engineering department.

>Drilling and taping a hole is not to hard
True. I guess I'll try to use the university machinery if they let me. Welding and milling are out because I don't have the training for that, and getting training right now is a pain in the rear.

>How do you plan on mounting the silver in the bell housing?
By making the catalyst long (and the diameter of the main chamber) and using the section of the chamber where it contracts into the throat to hold it back.

>>	Anonymous Mon Sep 9 23:00:58 2019 No.10960661 >>10960643 2007 and 2014 incidents created massive red tape delays and forced re-designs that were not truly necessary but had to be done to maintain consumer/government confidence.

>>	Anonymous Mon Sep 9 23:03:56 2019 No.10960669 >>10960661 This. Despite the memes about NASA taking safety too seriously, people in-general take safety very seriously.

>>	Anonymous Mon Sep 9 23:04:07 2019 No.10960670 >>10960606 Alright then, how much of a hit going from pure vac nozzles to Double Bell Nozzles are we talking about in terms of efficiency?

Anonymous Mon Sep 9 23:05:15 2019 No.10960674

>>10957796
Ares V wasn't going to be man-rated, with the tradeoff being it'd be much more powerful in terms of delivered payload than Saturn V (and SLS Block 2 as well). It had a bigger core stage with more, more powerful hydrolox engines, and a much more powerful 2nd stage using the J-2X engine. Was hamstrung early in design by the fact that you can't actually cluster the RS-68 engine unless you redevelop it to use regenerative cooling instead of ablative nozzles. Having to switch from RS-68 engines to RS-25 engines would increase costs and reduce performance, not that they didn't effectively end up doing that anyway.

>>	Anonymous Mon Sep 9 23:06:27 2019 No.10960677 File: 39 KB, 750x769, 1567770901093.jpg [View same] [iqdb] [saucenao] [google] >>10958915 yes

>>	Anonymous Mon Sep 9 23:07:37 2019 No.10960680 File: 174 KB, 1529x778, 1567018890082.jpg [View same] [iqdb] [saucenao] [google] >>10959134

>>	Anonymous Mon Sep 9 23:07:51 2019 No.10960682 We are settled on Starship, Startanker, and Staryeet for the three Starship variants, right?

Anonymous Mon Sep 9 23:10:35 2019 No.10960689

>>10959935
Sight reduction in performance compared to an ideal nozzle, slightly higher weight (VERY slightly), trade off benefit is of course you can fire your engine in atmosphere without it being shredded by flow separation, so if that's something you want then it makes sense/doesn't mean your vehicle doesn't work.

>>	Anonymous Mon Sep 9 23:11:40 2019 No.10960694 >>10959922 screw aerospikes, when are we getting our expansion/deflection nozzles?

>>	Anonymous Mon Sep 9 23:13:16 2019 No.10960703 File: 58 KB, 994x804, rombus3.jpg [View same] [iqdb] [saucenao] [google] >>10960694 >disrespecting a core element of the ROMBUS Aerospikes still has a use. As engine and heat-shield combo.

>>	Anonymous Mon Sep 9 23:15:18 2019 No.10960707 >>10960670 It's much less of a hit than if they replaced all the vacuum engines with straight up sea level ones. They'd only be like 5 or 10 percent off of the Isp of a purely vacuum optimized nozzle, max.

>>	Anonymous Mon Sep 9 23:16:20 2019 No.10960710 >>10960682 >Staryeet That's the one with the ultra low dry mass and three Raptors right? The one that gets like 10,500 m/s of delta V with ten tons of payload after refueling in LEO?

>>	Anonymous Mon Sep 9 23:16:49 2019 No.10960712 >https://fcc.report/ELS/Space-Exploration-Technologies-Corp-SpaceX/1631-EX-ST-2019 >Oct 13 >22.5 km max altitude >status\|: pending Official papers are now underway

>>	Anonymous Mon Sep 9 23:17:18 2019 No.10960714 >>10960710 Yep, refuel the fucker in orbit and you can do pretty much anything.

>>	Anonymous Mon Sep 9 23:17:20 2019 No.10960715 >>10960703 >As engine and heat-shield combo Only theoretically. An engine can't tank reentry heating, it can only tank engine operation because of the fuel acting as coolant.

>>	Anonymous Mon Sep 9 23:18:54 2019 No.10960718 >>10960715 Fuel would still be passed through the regen cooling system, the engine either wont be on, or will be on but at a low power setting.

Anonymous Mon Sep 9 23:19:55 2019 No.10960722

>>10960712
is it gay if I want to fuck a rocket

>>10960715
I've used it itt and you've used it as well, but how many people in aerospace do you think use tank as a verb? If someone tweeted Elon about Starship tanking the explosion from SH, would he get it? I've never heard someone use it irl.

>>	Anonymous Mon Sep 9 23:19:56 2019 No.10960721 >>10960714 >in orbit refuling Why the Ameriphobia? Do you hate the most powerful rocket in the world? i.e the SLS (god bless it).

Anonymous Mon Sep 9 23:28:10 2019 No.10960739

>>10960670
Probably not much if you're just using them for aborts. The thing about the double bell is it would be optimized just for vacuum and ground level, so while it won't be good for continuous running during launch all the way to space, it's good enough for aborting off the stack.

>>	Anonymous Mon Sep 9 23:36:00 2019 No.10960760 >>10960722 No idea, but it'll invade the vocabulary of others overtime so long as you and I keep the flame alive, anon.

>>	Anonymous Mon Sep 9 23:36:47 2019 No.10960763 >>10960680 The absolute desolate shantytown that is oldspace.

>>	Anonymous Mon Sep 9 23:37:25 2019 No.10960765 >>10960760 Idk, I think English can tank such a change.

>>	Anonymous Mon Sep 9 23:39:04 2019 No.10960773 >>10960649 Do they force you to do the training if not just YouTube it.

>>	Anonymous Mon Sep 9 23:41:11 2019 No.10960777 >>10960773 >Do they force you to do the training Yes. All of the powered machines have card readers that read student ID cards to check if a student had the training. No training? The machine won't turn on.

>>	Anonymous Mon Sep 9 23:44:35 2019 No.10960785 >>10960783

>>	Anonymous Tue Sep 10 00:44:02 2019 No.10960907 >>10958423 isn't the gravitational constant basically a function of the earth's radius anyway?

Anonymous Tue Sep 10 04:39:53 2019 No.10961207

>>10960591
oh look, exactly what I said the last time this question was asked! RIDE IT OUT, MOTHERFUCKERS
DUMP AND BURN
>>10960598
I think you need 6 or 7 engines to get your T/W ratio above 1, but the refueling system can probably be used to dump fuel quickly

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/sci/ - Science & Math