A significant percentage of high bypass ratio, turbofan engine performance deterioration was caused by an increase in operating clearance between fan/compressor and turbine blades and their outer air seals. These increased clearances resulted from rubs induced by a combination of engine power transients and aircraft flight loads. An analytical technique for predicting the effect of quasi-steady state aircraft flight loads on engine performance deterioration was developed and is presented. Thrust, aerodynamic and inertia loads were considered. Analytical results are shown and compared to actual engine test experience.
Effect of flight loads on turbofan engine performance deterioration
Ann. Intern. Gas Turbine Conf. ; 1979 ; San Diego, CA, United States
1978-01-01
Conference paper
No indication
English
Effect of time-dependent flight loads on turbofan engine performance deterioration
Tema Archive | 1981
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