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#1 Launch was scrubbed this morning due to a high pressure indication at ignition from engine #5. Next launch attempt will be Tuesday at the earliest. Engines shut down automatically 1 second before liftoff.
Posted by crosspatch 2012-05-19 12:03||
#2 Number 5 engine. The center one in the cluster had an over pressure. There are 5 rockets in this series. The Falcon 9 ver 1.1 has a different engine arrangement (an octagon with one in the middle at a lower height instead of the current 3 rows of 3). In addition 1.1 has %50 more tanking and more powerful engines.
Speculation is that the over pressure comes from the neighboring engines firing and creating a back pressure. Abort was after T-0 with the engines already ignited.
Posted by Water Modem 2012-05-19 14:16||
#3 Turns out it is a bad check valve somewhere in the number 5 plumbing. It has now been replaced and is being tested.
Posted by crosspatch 2012-05-19 21:11||