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#4471497 - 04/22/19 05:13 PM Re: SpaceX Just Launched a Crew Capable Spacecraft  
Joined: Jan 2006
Posts: 3,906
Mr_Blastman Online content
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Mr_Blastman  Online Content
Senior Member

Joined: Jan 2006
Posts: 3,906
Atlanta, GA
SpaceX experienced a setback yesterday. Apparently the Dragon capsule that recently returned from space, exploded.

Kaboom:



They had it sitting on the launch pad for tests. Not sure what happened yet. Space X is pretty hush-hush about this, and already trying to cover up the leaked video by deleting the original tweet. They are calling this an "anomaly."

https://arstechnica.com/science/201...-we-dont-about-the-crew-dragon-accident/


Either way, never fear. Space is dangerous. But that's no reason we should stop trying. The next Dragon capsule will be better than ever.

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#4482967 - 07/15/19 11:17 PM Re: SpaceX Just Launched a Crew Capable Spacecraft [Re: F4UDash4]  
Joined: Apr 2015
Posts: 8,202
F4UDash4 Offline
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F4UDash4  Offline
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Joined: Apr 2015
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Quote
Initial data reviews indicated that the anomaly occurred approximately 100 milliseconds prior to ignition of Crew Dragon’s eight SuperDraco thrusters and during pressurization of the vehicle’s propulsion systems. Evidence shows that a leaking component allowed liquid oxidizer – nitrogen tetroxide (NTO) – to enter high-pressure helium tubes during ground processing. A slug of this NTO was driven through a helium check valve at high speed during rapid initialization of the launch escape system, resulting in structural failure within the check valve. The failure of the titanium component in a high-pressure NTO environment was sufficient to cause ignition of the check valve and led to an explosion.


https://www.spacex.com/news/2019/07/15/update-flight-abort-static-fire-anomaly-investigation


“Government has three primary functions. It should provide for military defense of the nation. It should enforce contracts between individuals. It should protect citizens from crimes against themselves or their property. When government-- in pursuit of good intentions tries to rearrange the economy, legislate morality, or help special interests, the cost comes in inefficiency, lack of motivation, and loss of freedom. Government should be a referee, not an active player.” - Milton Friedman
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