airdvr 200 #1 January 5, 2011 http://apollo13.spacelog.org/ Very interesting readPlease don't dent the planet. Destinations by Roxanne Quote Share this post Link to post Share on other sites
lawrocket 3 #2 January 11, 2011 This is great. Checkign out the "Liftoff" section, there's some more story. At 5:32 Lovell radioed "Inboard" as the inboard motor on stage 2 shut down unexpectedly two minutes early. The shutdown was unexplained at the time and thought to be an electrical issue. It was later determined to be a pogo oscillation. The pogo oscillation was a problem that NASA knew about. It's where the fuel flow is uneven as a result of a vibration and gets more and more uneven so that the launch is like a pogo stick - and it gets worse and worse. NASA had a fix that wasn't ready until Apollo 14. The Apollo 13 pogos were determined to be 68g on the engines! Because of a malfunction in a low thrust sensor, the engine shut down. Analysis revealed that had that inboard engine not shut down, the stage 2 motors would have been pounded loose from their mounts and into to fuel tank. KABOOM! My wife is hotter than your wife. Quote Share this post Link to post Share on other sites
murrays 0 #3 January 11, 2011 It really is incredible to read this. Thanks to the OP for posting. What a feat of survival by the flight crew and all the ground support staff.-- Murray "No tyranny is so irksome as petty tyranny: the officious demands of policemen, government clerks, and electromechanical gadgets." - Edward Abbey Quote Share this post Link to post Share on other sites
