Author Topic: Recent Claim by Musk concerning hot 2nd stage start  (Read 26535 times)

Offline smartcooky

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #30 on: June 22, 2024, 11:55:34 PM »
Here is an interesting video - an interview of Elon Musk by Tim Dodd (Everyday Astronaut YT channel) at Starbase on a tour of the facility.

This was all filmed before Test Flight 4 and Musk talks about the issues with heat shielding and some of the measures they have been planning, specifically around the flaps and their hinge points, so its clear they did have some concerns about that before the flight.   



If you're not a scientist but you think you've destroyed the foundation of a vast scientific edifice with 10 minutes of Googling, you might want to consider the possibility that you're wrong.

Offline bknight

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #31 on: June 23, 2024, 09:20:21 AM »
Well they should, any moving parts by necessity leaves gaps however small they may be.  Gaps lead to plasma moving through those gaps as we viewed on the video of the reentry of Starship.  As stated earlier it was amazing to me that they still functioned after all that and oriented the vehicle vertical so the engines could light.  Not a perfect "landing", but progress.
Now they need to design the booster engines so that atmospheric drag doesn't tear them apart and they should have a catch by the tower. 
I found that the second tower at Boca will be taller than the first allowing stacking/catching the newer version which is taller.
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Offline raven

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #32 on: July 05, 2024, 03:25:01 PM »
I wonder if looking at how they armoured knee joints in plate armour might help. Both have the goals of coverage while maintaining flexibility.  Middle Ages and Renaissance armours didn't have to contend with thousands of degree plasma, mind you.
« Last Edit: July 05, 2024, 03:34:55 PM by raven »

Offline Peter B

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #33 on: October 13, 2024, 04:47:18 PM »
And now in flight 5 they caught the damn first stage, and videoed the splashdown of the second stage...

That suggests some pretty spectacular aiming.
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Offline bknight

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #34 on: October 14, 2024, 10:29:13 AM »
And now in flight 5 they caught the damn first stage, and videoed the splashdown of the second stage...

That suggests some pretty spectacular aiming.

Yes they had a very good flight and the FAA says no investigation warranted after the flight, onward and upward.
Truth needs no defense.  Nobody can take those footsteps I made on the surface of the moon away from me.
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Offline raven

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #35 on: October 15, 2024, 03:43:22 AM »
Long road still, there's a lot of damage to the vehicle that's going to impede rapid turn around as is stands, but getting that catch on the first try is damn impressive.
Come a long way from the Grasshopper, that's for sure, hanging "in the sky in much the same way that bricks don't."

Offline Zakalwe

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #36 on: October 15, 2024, 03:44:07 AM »
It was one hell of a test flight! Looks like there's a lot to do with the heatshield and preventing flap damage.

Also, time to stop funding the boondogle that is SLS? (not going to happen though...pork barrel politics and all that).
"The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.' " - Isaac Asimov

Offline jfb

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #37 on: October 17, 2024, 10:34:45 AM »
Also, time to stop funding the boondogle that is SLS? (not going to happen though...pork barrel politics and all that).

We get the government we deserve.  If the American people could stop treating politics as reality TV and electing clowns, grifters, criminals, and fossils to Congress, mistakes like SLS wouldn't happen (as often). 

Offline Peter B

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #38 on: October 21, 2024, 05:35:07 PM »
Long road still, there's a lot of damage to the vehicle that's going to impede rapid turn around as is stands, but getting that catch on the first try is damn impressive.
Come a long way from the Grasshopper, that's for sure, hanging "in the sky in much the same way that bricks don't."

One of the other things which was pointed out in one video was how the chopsticks moved the booster laterally so that it was positioned above the launch pad. I mean, I knew there was no way the booster would be able to land directly above the pad, but I hadn't bothered to think through what would be involved in the repositioning process.
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Offline smartcooky

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #39 on: October 22, 2024, 11:10:03 PM »
Long road still, there's a lot of damage to the vehicle that's going to impede rapid turn around as is stands, but getting that catch on the first try is damn impressive.
Come a long way from the Grasshopper, that's for sure, hanging "in the sky in much the same way that bricks don't."

One of the other things which was pointed out in one video was how the chopsticks moved the booster laterally so that it was positioned above the launch pad. I mean, I knew there was no way the booster would be able to land directly above the pad, but I hadn't bothered to think through what would be involved in the repositioning process.

As far I can see, this may always be necessary as the booster will not always approach the launch tower from the exact same direction. There will be variations depending on the orbital inclination of the launch.
If you're not a scientist but you think you've destroyed the foundation of a vast scientific edifice with 10 minutes of Googling, you might want to consider the possibility that you're wrong.

Offline Allan F

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Re: Recent Claim by Musk concerning hot 2nd stage start
« Reply #40 on: October 23, 2024, 04:10:00 PM »
Can be that they guide the booster in using waypoints, so the final few kilometers is the same each time. By doing that, they ensure the booster can fail safely in a predetermined path, if the engines go away.
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