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APOLLO 13- QUESTIONS ABOUT THE MOVIE ANSWERED. ... 2. One particular problem during the
Apollo 13 mission was a build up of carbon dioxide in the spacecraft. ...
Apollo 13. Movie Review: Apollo 13 The title of this movie is Apollo 13. ... Apollo
13 lifted off from the Kennedy Space Center on April 11, 1970. ...
Apollo 13. Apollo 13 Apollo 13 launched on April 11, 1970 from the Kennedy
Space Center in Florida. ... Apollo 13 was off to a rocky start. ...
leadership in apollo 13. An excellent example of the importance of facts based on
real time information can be taken from the Apollo 13 mission to the moon. ...
Apollo 13: Failure is not an Option. ... Commander Jim Lovell closed the broadcast
with this message, §This is the crew of Apollo 13. ...
Submitted by freebabe on May 18, 2008
Category: History Other
Words: 270 | Pages: 2
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The Apollo 13 mission was scheduled to explore the Fra Mauro formation, or Fra Mauro highlands, named after the 80-kilometer-diameter Fra Mauro crater, located within it. It is a widespread, hilly geological (or more properly, selenological) area covering large portions of the lunar surface around Mare Imbrium, and is thought to be composed of ejecta from the impact which formed the mare. With the failure of the mission, the flight to Fra Mauro was done on Apollo 14.
The flight's problems began during the liftoff with a lesser-known malfunction: during the second-stage burn, the center engine shut down two minutes early. The four outer engines were run for longer than planned, to compensate for this.[6] Engineers later discovered that this was due to dangerous pogo oscillations which might have torn the second stage apart; the engine was experiencing 68g vibrations at 16 hertz, flexing the thrust frame by 3 inches (76 mm). However, the oscillations caused a sensor to register excessively low average pressure, and the computer shut the engine down automatically.[7] Smaller pogo oscillations had been seen on previous Apollo missions (and had been recognized as a potential problem from the earliest unmanned Titan-Gemini flights), but on Apollo 13 they had been amplified by an unexpected interaction with the cavitation in the turbo-pumps.[8] Later missions included anti-pogo modifications, which had been under development since before Apollo 13. Those modifications solved the problem. They entailed (a) the addition of a helium gas reservoir in the center engine’s liquid oxygen line to dampen pressure oscillations, (b) an automatic cutoff for the center engine in case this failed, and (c) simplified propellant valves on all five second-stage engines.
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