From The Afternoon of Saturday April 11th 1970, CBS News covers the 3rd Moonlanding mission. with Walter Cronkite and former astronant Wally Schirra The Apollo 13 Crew: Commander :James A. Lovell, Jr. Command Module Pilot: John L. Swigert Lunar Module Pilot: Fred W. Haise, Jr. The Apollo 13 Mission was planned as a lunar landing mission but was aborted en route to the moon after about 56 hours of flight due to loss of service module cryogenic oxygen and consequent loss of capability to generate electrical power, to provide oxygen and to produce water. Spacecraft systems performance was nominal until the fans in cryogenic oxygen tank 2 were turned on at 55:53:18 ground elapsed time (GET). About 2 seconds after energizing the fan circuit, a short was indicated in the current from fuel cell 3, which was supplying power to cryogenic oxygen tank 2 fans. Within several additional seconds, two other shorted conditions occurred. Electrical shorts in the fan circuit ignited the wire insulation, causing temperature and pressure to increase within cryogenic oxygen tank 2. When pressure reached the cryogenic oxygen tank 2 relief valve full-flow conditions of 1008 psi, the pressure began decreasing for about 9 seconds, at which time the relief valve probably reseated, causing the pressure to rise again momentarily. About a quarter of a second later, a vibration disturbance was noted on the command module accelerometers. The next series of events occurred within a fraction of a second ...
Keywords: CBS, News, 1970, Walter, Cronkite, Apollo, 13, Launch, Cowntdown
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