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To: Moonman62

Watched live. Engine s/n 32 shut down at ~ 1min. 42secs. Engine s/n 36 shut down after more than 3 mins. Engine s/n 42 performed well the entire flight. The flaps worked perfectly and guided the prototype to a dead center landing. Engine s/n 36 did reignite during the lang but it was sputtering and not much help. With only one engine (s/n 42) working there wasn’t enough thrust to keep it from a hard landing and a subsequent Rapid Unplanned Disassembly.
Prototype number 9 is fully assembled and ready for the next high altitude test. It is outfitted with more mature engines. If they all stay lit and all reignite number 9 should perform as intended.


7 posted on 12/09/2020 3:29:27 PM PST by ocrp1982
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To: ocrp1982
Nice detailed summary of engine performance, thanks.

We definitely can't have this happen on Mars, lol.

11 posted on 12/09/2020 3:34:27 PM PST by CivilWarBrewing (Get off my back for my usage of CAPS, especially you snowflake males! MAN UP!)
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To: ocrp1982

What about landing arms or struts? Do the fins serve as the struts? I didn’t see any landing arms deploy!!!


13 posted on 12/09/2020 3:38:54 PM PST by CivilWarBrewing (Get off my back for my usage of CAPS, especially you snowflake males! MAN UP!)
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To: ocrp1982

Thanks for that good info! Were the flaps the primary test? Maybe the more mature engines weren’t risked due to flap uncertainties?


19 posted on 12/09/2020 3:47:26 PM PST by polymuser (A socialist is a communist without the power to take everything from their citizens...yet.)
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To: ocrp1982

I understand that Musk tweeted that the two engines shut down in sequence early, due to the FAA asking for a lower altitude flight. 12.5K vice 15K. Musk also said that they lacked pressure in the header tanks for landing.


29 posted on 12/09/2020 4:45:02 PM PST by 75thOVI (Any sufficiently advanced stupidity is indistinguishable from malice.)
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To: ocrp1982

Rapid Unplanned Disassembly Emergency. That’s just plain RUDE! Seriously, I love your jargon, RUD.


38 posted on 12/09/2020 6:05:42 PM PST by dangus
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