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SpaceX Loses Starship Spaceraft During Test Flight

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Re: SpaceX Loses Starship Spaceraft During Test Flight

#51
post #41

I’m old enough to remember the Apollo program. Not one Saturn V blew up on launch. I guess we had a different notion of “success” back then.

I think "mixed" would be a better term, but the explosion was, IIUC, the built-in "destroy this rocket because something is going wrong" system, and I'm not sure if we even had those back in the Apollo days ("not sure" in the literal sense, maybe we did and I just never heard about it).

Re: SpaceX Loses Starship Spaceraft During Test Flight

#52
post #14

Earlier quoted context omitted.

Isn't reentry supposed to be the hard part? How was this a success?

The largest rocket ever built just got to space for the first time. Even without re-entry this is a milestone. They have a production line to build these things. They’ll roll out the next one and try again. It’s not like SLS where everything is expected to work perfectly.

I guess that’s one way to define success or a milestone. The Saturn V used for the Apollo program had different criteria, like not blowing up and having all engines ignite.

Now that we have the person who knows more about manufacturing than anyone else alive in charge I’m sure these glitches will get sorted out.

Re: SpaceX Loses Starship Spaceraft During Test Flight

#55

Earlier quoted context omitted.

Probably related to the tons of rocks and dirt thrown up during excavation of the surprise flame trench during the first test.

I think the only one who was surprised by that outcome was Elon.

It was very shocking to see that they didn't have one. It's not like this was one of those secret things that NASA has done that prevents others from having success. As recently as during SLS ramp up, I remember articles covering the testing of the deluge system for SLS. They talked about how many gallons per second, and the total amount of water necessary, and all of the other blah blah blah details that a non-rocket scientist like me read and was aware of being something necessary. The fact that SpaceX did not have this was quite laughable. Like nobody ever at SpaceX raised a hand in a meeting to bring up this issue, or it was brought up but then slapped down with a "let's don't be silly" type of response? I think the latter would be worse than the former.

Re: SpaceX Loses Starship Spaceraft During Test Flight

#58
post #15

The engines on the first stage did well in this test. During the first test they were malfunctioning like crazy.

Probably related to the tons of rocks and dirt thrown up during excavation of the surprise flame trench during the first test.

The official analysis is that propellant leaks lead to fires around the engines, damaging their connections to the flight control system.

Re: SpaceX Loses Starship Spaceraft During Test Flight

#59
post #42

In spite of this, it was still a great success.

> SpaceX Loses Starship Spaceraft During Test Flight It's really a glass half empty headline, isn't it? It's like if someone got bronze at the Olympics and the headline were, "Athlete loses to multiple opponents, fails to get gold or silver medal."

I mean, second place is the first loser after all. The only thing left after bronze is participation trophies for all the athletes, because they all did try really hard.

Re: SpaceX Loses Starship Spaceraft During Test Flight

#60
post #54

Worth noting, the first stage flight probably constitutes the most powerful machine ever successfully operated by humankind, no? (A fusion bomb generates more power for a minuscule period of time, but that sort of competes in a different class.)

Yes in terms of thrust, it’s almost double the nearest competitor, the SLS. SLS generates 8.8M pounds while the Starship generates 16.7M pounds.
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