KENNEDY SPACE CENTER, FLA. - Jack Colella, with United Space Alliance, is conducting electromagnetic interference and ground resistance testing on wiring in the aft engine compartment on Space Shuttle Discovery using various test equipment, such as current probes, amp meters, digital volt meters, breakout boxes, Nicollet recorders, oscilloscopes and time domain reflectometers. Other testing will evaluate wiring runs and connections for any reactions under semi-cryogenic conditions. Engineering teams have been working through a troubleshooting plan to address an issue with a liquid hydrogen low
KENNEDY SPACE CENTER, FLA. - Jack Colella, with United Space Alliance, is conducting electromagnetic interference and ground resistance testing on wiring in the aft engine compartment on Space Shuttle Discovery using various test equipment, such as current probes, amp meters, digital volt meters, breakout boxes, Nicollet recorders, oscilloscopes and time domain reflectometers. Other testing will evaluate wiring runs and connections for any reactions under semi-cryogenic conditions. Engineering teams have been working through a troubleshooting plan to address an issue with a liquid hydrogen low-level fuel sensor circuit. The sensor circuit failed a routine prelaunch check during the countdown July 13, delaying Discovery’s first launch attempt on Return to Flight mission STS-114.
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