SpaceX Tuesday...

SpaceX Tuesday...

Author
Discussion

MartG

14,435 posts

148 months

Sunday 14th July
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Beati Dogu

6,025 posts

83 months

Sunday 14th July
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"~20m up & sideways for first flight. Mk1 Starship hopefully 20km up in a few months." - Elon Musk

Should be quite a show.


Testing the Raptor gimballing:

https://www.youtube.com/watch?v=3pD5CZZfnYk

Edited by Beati Dogu on Sunday 14th July 22:24

Toaster

2,732 posts

137 months

Monday 15th July
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Problem is it’s not a Starship, just a marketing ploy.

AshVX220

3,976 posts

134 months

Monday 15th July
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Toaster said:
Problem is it’s not a Starship, just a marketing ploy.
fk me dude, give it a rest. For most of us, it's exciting.

RobDickinson

26,699 posts

198 months

Monday 15th July
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Wtf do you think they are marketing?

They've strapped the most advanced rocket engine in the world to it.

garyhun

27,283 posts

172 months

Monday 15th July
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AshVX220 said:
Toaster said:
Problem is it’s not a Starship, just a marketing ploy.
fk me dude, give it a rest. For most of us, it's exciting.
Just ignore the joyless one.

Toaster

2,732 posts

137 months

Monday 15th July
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RobDickinson said:
Wtf do you think they are marketing?

They've strapped the most advanced rocket engine in the world to it.
Hype mainly, I did not say it’s a pile of poo, it’s just not a Starship. It may be the ‘most advanced rocket engine’ for now but another one will be along soon and that still will not make it a Starship.

Toaster

2,732 posts

137 months

Monday 15th July
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garyhun said:
AshVX220 said:
Toaster said:
Problem is it’s not a Starship, just a marketing ploy.
fk me dude, give it a rest. For most of us, it's exciting.
Just ignore the joyless one.
I did not say it’s not ‘exciting’ although I can think of many other things to get the heart racing, adrenaline pumping and life affirming experiences than calling a rocket that may be capable of getting to Mars a Starship ! Me Joyless I don’t think so, pragmatic and realistic oh yes. biggrin

C350

295 posts

8 months

Monday 15th July
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I’m sure some of the things that get your heart racing would bore others to death. Just because it doesn’t do anything for you, it doesn’t mean everyone else is the same

RobDickinson

26,699 posts

198 months

Monday 15th July
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eharding

9,439 posts

228 months

Beati Dogu

6,025 posts

83 months

Monday 15th July
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Holy microscopes Batman, That's small. cool

So it was a plumbing leak, not the Draco or Super Draco engines themselves at fault. That's something at least.

It's worrying that a titanium valve seems to have spontaneously "ignited" when exposed to high pressure nitrogen tetroxide (NTO) from the leak.

RobDickinson

26,699 posts

198 months

Monday 15th July
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It does seem unusual, looks like its not such a big deal and wont slow down crew dragon program.

eharding

9,439 posts

228 months

Monday 15th July
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Beati Dogu said:
Holy microscopes Batman, That's small. cool

So it was a plumbing leak, not the Draco or Super Draco engines themselves at fault. That's something at least.

It's worrying that a titanium valve seems to have spontaneously "ignited" when exposed to high pressure nitrogen tetroxide (NTO) from the leak.
Does beg the question who else is using Titanium in proximity to high pressure NTO, and if they've been lucky thus far, or if there is something new in the Space-X plumbing that acted as a catalyst for the fubar reaction.

annodomini2

5,773 posts

195 months

Tuesday 16th July
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eharding said:
Beati Dogu said:
Holy microscopes Batman, That's small. cool

So it was a plumbing leak, not the Draco or Super Draco engines themselves at fault. That's something at least.

It's worrying that a titanium valve seems to have spontaneously "ignited" when exposed to high pressure nitrogen tetroxide (NTO) from the leak.
Does beg the question who else is using Titanium in proximity to high pressure NTO, and if they've been lucky thus far, or if there is something new in the Space-X plumbing that acted as a catalyst for the fubar reaction.
Or they are running at much higher pressure.

Beati Dogu

6,025 posts

83 months

Tuesday 16th July
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Scott Manley has a video on the Crew Dragon explosion:

https://www.youtube.com/watch?v=6P063KnI5NI

Flooble

1,722 posts

44 months

Wednesday 17th July
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There's been a big fire for Starhopper, not looking ideal.

https://www.teslarati.com/spacex-fires-up-starhopp...

Eric Mc

107,024 posts

209 months

Wednesday 17th July
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Not sure that the test went to plan. The speculation is that the flash fire was deliberate due to the dumping of liquid hydrogen to reduce internal pressure. As the structure is stainless steel, the fireball won't really have affected the booster.

Beati Dogu

6,025 posts

83 months

Wednesday 17th July
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Some hi-res footage:

https://www.youtube.com/watch?v=JKyZ_7ZjabU

The flames were a while after the Raptor rocket fired and after they sprayed water all over the place.

It seems likely that the water vapourized liquid methane on the floor. This was ignited by the small residual flames and/or hot engine. Boom Hollywood SFX. They really need this beast over a flame trench.

Eric Mc

107,024 posts

209 months

Wednesday 17th July
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It certainly looks like the spraying of water onto the pad is what triggered that flashover - a bit like pouring water on a chip pan fire.