KENNEDY SPACE CENTER, FLA. - After 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, Aaron Sherman (left), Jack Colella (center) and Jeff Huet (lower right), all with United Space Alliance, and John Kennedy, NASA, review data. Engineering teams have been working through a troubleshooting plan to address an issue with a liquid hydrogen low-lev
KENNEDY SPACE CENTER, FLA. - After 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, Aaron Sherman (left), Jack Colella (center) and Jeff Huet (lower right), all with United Space Alliance, and John Kennedy, NASA, review data. 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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