Title :
A simulation model for risk assessment of turbine wheels
Author :
Safie, Fayssal M. ; Hage, Richard T.
Abstract :
A simulation model has been developed to evaluate the risk of the Space Shuttle auxiliary power unit (APU) turbine wheels for a specific inspection policy. It is an effective tool for risk/reliability evaluation and allows the analyst to study the tradeoffs between wheel reliability, wheel life, inspection interval, and rejection crack size. In the APU application, sensitivity analysis results showed that the wheel life limit has the least effect on wheel reliability when compared to the effect of the inspection interval and the rejection crack size. The simulation model developed represents a flexible tool to predict turbine wheel reliability and study the risk under different inspection policies
Keywords :
aerospace computing; digital simulation; reliability; space vehicle power plants; Space Shuttle auxiliary power unit; inspection; rejection crack size; reliability evaluation; risk assessment; risk evaluation; sensitivity analysis; simulation model; turbine wheels; wheel life; wheel reliability; Aerospace simulation; Analytical models; Blades; Inspection; Predictive models; Risk management; Sensitivity analysis; Space shuttles; Turbines; Wheels;
Conference_Titel :
Reliability and Maintainability Symposium, 1991. Proceedings., Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-87942-661-6
DOI :
10.1109/ARMS.1991.154423
