Aircraft Turbine Engine Monitoring Experience

Implications for the F100 Engine Diagnostic System Program

by John Birkler, J. R. Nelson

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A briefing report examining experience gained from six aircraft turbine engine monitoring system case studies and their implications for the F100 Engine Diagnostic System (EDS) under development for the F-15 and F-16 aircraft. Emphasis is on the substance of the EDS program, how it relates to previous engine monitoring experience, and some policy options. Two case studies are presented in detail: the U.S. T-38 Engine Health Monitoring System and the British Engine Usage Monitoring System. Conclusions are: (1) Experience does not warrant optimistic near-term cost reduction. (2) The flight-test plan, as currently designed (October 1978), is unlikely to yield conclusive evidence on the value of the EDS. (3) The present scope of the EDS omits valuable long-term design feedback and potential improvement to testing cycles. Recommendations are: (1) Develop a phased implementation schedule. (2) Provide a continuous recording option. (3) Revise the life-cycle analysis to reflect more completely the costs and benefits of the EDS relative to both aircraft and engine.

This report is part of the RAND Corporation report series. The report was a product of the RAND Corporation from 1948 to 1993 that represented the principal publication documenting and transmitting RAND's major research findings and final research.

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