SpaceX Tuesday...

SpaceX Tuesday...

Author
Discussion

MartG

16,115 posts

159 months

Sunday 14th July 2019
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Beati Dogu

6,670 posts

94 months

Sunday 14th July 2019
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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

2,804 posts

148 months

Monday 15th July 2019
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Problem is it’s not a Starship, just a marketing ploy.

AshVX220

4,559 posts

145 months

Monday 15th July 2019
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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

29,836 posts

209 months

Monday 15th July 2019
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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

29,183 posts

183 months

Monday 15th July 2019
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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

2,804 posts

148 months

Monday 15th July 2019
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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

2,804 posts

148 months

Monday 15th July 2019
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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

955 posts

19 months

Monday 15th July 2019
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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

29,836 posts

209 months

Monday 15th July 2019
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eharding

10,803 posts

239 months

Beati Dogu

6,670 posts

94 months

Monday 15th July 2019
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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

29,836 posts

209 months

Monday 15th July 2019
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It does seem unusual, looks like its not such a big deal and wont slow down crew dragon program.

eharding

10,803 posts

239 months

Monday 15th July 2019
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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

5,900 posts

206 months

Tuesday 16th July 2019
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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

6,670 posts

94 months

Tuesday 16th July 2019
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Scott Manley has a video on the Crew Dragon explosion:

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

Flooble

2,071 posts

55 months

Wednesday 17th July 2019
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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

111,565 posts

220 months

Wednesday 17th July 2019
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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

6,670 posts

94 months

Wednesday 17th July 2019
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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

111,565 posts

220 months

Wednesday 17th July 2019
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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.