T55-L-714 Engine Development and Qualification. Engine M11 Low Cycle Fatigue Test Report. (0213-005-87),
Abstract
T55-L-713 engine M-11C, which had previously completed 1000 cycles (250 hours) of low cycle fatigue (LCF) testing, was subjected to an additional 1000 cycles of LCF testing. Testing ended when there was a failure in the power turbine section of the engine. The results of investigations completed up to the publication of this report indicate a third turbine blade failure. Prior to the failure, the engine had satisfactorily completed 746 cycles (161.6 hours) of the scheduled second 1000 cycles. Thermodynamic deterioration was consistent with the number of cycles completed and there had been no significant mechanical or performance problems. The average actual gas producer speed (NI), shaft horsepower (SHP), and power turbine inlet temperature are listed. Except for secondary damage suffered in the failure, the T55-L-713 gas producer turbine components were in good condition and showed relatively little thermal distress.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1987
- Accession Number
- ADA192765
Entities
People
- J. Kozub Jr