SpaceX and other space news updates

1,354,458 Views | 15398 Replies | Last: 11 hrs ago by lb3
TexAgs91
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Unless the FAA gets super political, I think SpaceX will go on to the moon & mars whether NASA helps out or not.
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Ag_of_08
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I could see, and we have seen some rumbling at attempts in the past, enough money getting thrown around to at least delay them.
nortex97
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TexAgs91 said:

Unless the FAA gets super political, I think SpaceX will go on to the moon & mars whether NASA helps out or not.
Some have argued that the first interplanetary for starship should be to deliver some sort of floating probe to Venus, if they don't get the moon contract from NASA. The argument has some merit as I recall.
Ag_of_08
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Rocket labs is aiming their new medium lift LV specifically at a Venus launch, it is apparently something one of their founders is passionate about.
aTmAg
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TexAgs91 said:

Unless the FAA gets super political, I think SpaceX will go on to the moon & mars whether NASA helps out or not.
The same administration that appointed Nelson controls the FAA. Nelson lobbied the admin for this position and got it despite plenty of opposition. What else will he lobby for and get? Perhaps FAA cooperation?

The Nelson appointment could be a sign on a larger trend.
TexAgs91
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https://www.teslarati.com/spacex-starship-first-super-heavy-booster-stacked/
Quote:

For the first time ever, SpaceX has stacked a Super Heavy tank section to its full height, effectively completing assembly of the largest rocket booster ever built.

While a good amount of work still remains to weld the two halves together and connect their preinstalled plumbing and avionics runs, those tasks are largely marginal and will tweak the massive steel tower that's now firmly in one piece. Comprised of 36 of the steel rings also used to assemble Starships, the first Super Heavy prototype serial number BN1 will stand roughly 67 meters (220 ft) tall from the top of its uppermost ring to the tail of its soon-to-be-installed Raptor engines.

At that height, Super Heavy BN1 is just 3 meters (~10 ft) shorter than an entire two-stage Falcon 9 or Falcon Heavy rocket the second and third tallest operational rockets today. Of course, Super Heavy is just a booster and SpaceX says the rocket will stand at least 120m (~395 ft) tall with a Starship upper stage and spacecraft installed on top, easily making it the tallest (and likely heaviest) launch vehicle ever assembled.

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ABATTBQ11
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TexAgs91 said:

ABATTBQ11 said:

double aught said:

Quote:

It's my understanding that SLS is purpose built for going to the moon, while Starship is more for reusable, heavy lift into earth orbit. SLS should be able to put more mass into lunar orbit sooner
But I think SLS still can't land people on the moon in just one launch. Is that correct? If so, another strike against it.

Like I mentioned a while back, all this makes Apollo/Saturn that much more impressive.


SLS is just the rocket. It's only responsible for getting the payload there and into lunar orbit. It's the payload's job to land and get back off the surface. SLS could certainly "land" people on the moon in one launch in that sense. Initial Block 1 will have a lunar injection payload of 27(?) time and Block 1B bumps that to 43 with an improved upper stage I believe. Block 2 would have improved boosters (supposed to be able to put 130 tons into LEO) and be used for crewed missions to Mars, but we'll see how that plays out. Starship would require multiple launches to get to the moon. One refueling could deliver 40ish tons. Not sure how or if Starship could get to Mars. I would think it would take multiple refuelings, and that's maybe part of why NASA wants to establish a lunar presence as a hopping off point.

The thing about reusing rockets like SpaceX is doing is that it reduces your payload for a reduction in cost. That's fine (great even for satellite launches), but going to the moon and Mars requires a large payload and a lot of speed. The trade-off is much higher cost for a simpler, more capable launch (in terms of deliverable mass and how far/fast you can send it). It seems like SpaceX will have to figure out in orbit refueling before they can get beyond LEO, but when they do they will be much more cost effective. In the meantime, NASA will push forward with landing on the moon again and possibly Mars.


Saturn V was impressive as it still beats SLS and Starship in capability. It could deliver 50 tons into lunar orbit.


Yeah in orbit refueling will be another game changer. It is absolutely required (or in orbit spacecraft assembly) to do anything other than plant-the-flag missions.

At one point back in the Apollo days, engineers were given a $1000 bonus if they could figure out how to shave a point off the lunar lander. I'm surprised they didn't starve the astronauts before sending them to the moon.


Speaking of in orbit refueling and Apollo, that was one of the first ideas. I think the complexity and number of launches necessary to print the capability killed the idea. I'm sure SpaceX can do it, by I don't think it will happen for awhile.

I also wonder how much money they're blowing through blowing up these SN prototypes. I know their eventual launch costs will be minimal, by what's the R&D cost?
bthotugigem05
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I think the engines are the big cost factor there, the actual fabrication of the Starships aren't outsizedly high.
munch96
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https://www.reuters.com/article/us-space-exploration-spacex-idUSKBN2BA2JE?fbclid=IwAR0smeJmMJJRtIOnwE0LITWimY71piAjoZfNEGAX6iVaIMaU_bY0lQZCJxY

Quote:

(Reuters) - NASA said on Thursday it had signed an agreement with billionaire Elon Musk's SpaceX that would focus on avoiding collisions between the agency's spacecraft and the rocket company's large constellation of satellites.

The agreement would enhance data sharing between NASA and Starlink, SpaceX's space internet venture, to ensure both parties are fully aware of the exact location of spacecraft and debris in orbit
Ag_of_08
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The also didn't have the launch capability when Apollo was discussing it. The S-1b was what... 21 tons to LEO, and very expensive to boot?

Think about how cheap the FH is for 65 tons in full expendable mode, much less the reusable format. Starship will be even cheaper and they're aiming for 150 tons of cargo... the economics of scale tip heavily in their favor.

In flight refueling has not happened yet because of shelby..... plain and simple. Even ULA favored IFR over the SLS concept, the Alabama mafia is what killed it. He threatened to shut funding for manned spaceflight development completely off if they kept bringing it up.
nortex97
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Interesting tidbits, I didn't realize Musk had hinted at a much larger Starship V2.0 down the road.



An enormous orbital propellant depot is also something that would be very useful to interplanetary missions.



I'm still trying to wrap my head around the size of the SH with a starship, and pondering an 18M Starship is not something I'm able to handle right now with a few sips of coffee. Follow up that thought with 'micro gravity' transfers from some huge tanker in space in a langrangian point/orbit and I might just have to switch to beer early.
TexAgs91
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"Freedom is never more than one election away from extinction"
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TexAgs91
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"Freedom is never more than one election away from extinction"
Fight! Fight! Fight!
Centerpole90
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hph6203
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I had heard next was 12m, and then 18, guess they're skipping the 12m.

That thing is going to be ridiculous.
Decay
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Wait, what's the current size? We're going to reach ludicrous payload and thrust...
nortex97
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hph6203 said:

I had heard next was 12m, and then 18, guess they're skipping the 12m.

That thing is going to be ridiculous.
Note, that post was around 2 years ago. The current one is 9 meters. The present one is almost ludicrously large, so doubling it again would be....going plaid.

I have no idea what the timeline/prospects as such would be. I haven't even read any speculation, but would have to guess it could only make sense if the current one succeeds fantastically, as some sort of carbon fiber successor. Any such starship's booster could not, however, be 'caught' for recovery, and makes me ponder how it could even land safely.
Mathguy64
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Except it's not really a double. Going from a diameter of 9m to 18m really multiplies the cross sectional area by a factor of 4. Same for the internal volume. It's a huge increase.
Mathguy64
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So a current BN is set for 28 Raptors. I'm trying to imagine one 4 times as a large needing 100 Raptors. It's a little scary and a little erotic all at the same time.
Ag_of_08
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Mathguy64 said:

So a current BN is set for 28 Raptors. I'm trying to imagine one 4 times as a large needing 100 Raptors. It's a little scary and a little erotic all at the same time.


*happy korolev noises*
TexAgs91
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I've been working on the Boca Chica model today


"Freedom is never more than one election away from extinction"
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Ag_of_08
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Are you working with any of the YouTubers, allowing then to display any of the renders?
A is A
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nice security detail
TexAgs91
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Ag_of_08 said:

Are you working with any of the YouTubers, allowing then to display any of the renders?
I haven't thought of that, but that would be cool. I just now have it in the state it's in now. The surrounding area was added this weekend and the construction site cleaned up (still needs more cleaning up). And I want to start working on the launch site next. I'll take a look at some to see if I can help out
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Ag_of_08
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You should get in touch with someone like " what about it", he's always featuring animations and renders, and is buddies up with labpadre and the guy who does overflights. Seems like a nice group of people!
Maximus_Meridius
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In case any of you guys are up and at 'em early, they're going for a static fire of SN11 today, and Lab Padre is reporting that the pad has already been cleared. Might get this in before lunch if we're lucky.
nortex97
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FYI, since this is on f16, after all, Bernie Sanders thinks space exploration is a silly thing for us to prioritize over progressive (socialist) goals in America.

He's an idiot like all Democrats (socialists/CCP members) in DC, and their 'voters.'

TexAgs91
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"Freedom is never more than one election away from extinction"
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PJYoung
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CanyonAg77
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I'll begin to believe Bernie when he gives two or three of his houses to poor people.
A is A
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time estimate?

nvm. Est 850-905 central
Malachi Constant
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Just had about a 3 second static fire. Longer than the others, but still very short.
Decay
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Malachi Constant said:

Just had about a 3 second static fire. Longer than the others, but still very short.
They did multiple in the same day for SN10 right?
PJYoung
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Yeah I thought it looked and sounded good.
PJYoung
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On the broadcast they mentioned SpaceX didnt static fire later last week because they couldn't get road closures from the county due to spring break.

So they were very ready early this morning.
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