A case study in nonconformance and performance trend analysisAs part of NASA's effort to develop an agency-wide approach to trend analysis, a pilot nonconformance and performance trending analysis study was conducted on the Space Shuttle auxiliary power unit (APU). The purpose of the study was to (1) demonstrate that nonconformance analysis can be used to identify repeating failures of a specific item (and the associated failure modes and causes) and (2) determine whether performance parameters could be analyzed and monitored to provide an indication of component or system degradation prior to failure. The nonconformance analysis of the APU did identify repeating component failures, which possibly could be reduced if key performance parameters were monitored and analyzed. The performance-trending analysis verified that the characteristics of hardware parameters can be effective in detecting degradation of hardware performance prior to failure.
Document ID
19910046459
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Maloy, Joseph E. (NASA Johnson Space Center Houston, TX, United States)
Newton, Coy P. (Rockwell International Corp. Space Transportation Systems Div., Huntsville, AL, United States)