CH-46 rotor head acoustic fault detection analysis

Jeffrey N. Schoess; Darryl Busch; Sunil Menon

doi:10.1117/12.349755

31 May 1999 CH-46 rotor head acoustic fault detection analysis

Jeffrey N. Schoess, Darryl Busch, Sunil Menon

Proceedings Volume 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials; (1999) https://doi.org/10.1117/12.349755
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

Reductions in Navy maintenance budgets and available personnel have dictated the need to transition from time-based to 'condition-based' maintenance. Achieving this requires new enabling diagnostic technologies. Stress-wave acoustic emission technology has shown promise for the early detection of helicopter rotor head dynamic component faults. In September 1997, Honeywell Technology Center (HTC) successfully completed a three-week flight test of its rotor acoustic monitoring system (RAMS) at Patuxent River Flight Test Center. This flight test was the culmination of an ambitious 38-month, proof-of-concept effort directed at demonstrating the feasibility of detecting crack propagation in helicopter rotor components. Honeywell is presently developing a time- frequency-based real-time processing algorithm under internal research efforts to automate the fault-detection process. The focus of this paper is to overview the CH-46 flight test and system configuration and present preliminary results of the time-frequency analysis of the flight-test dataset.

Citation Download Citation

Jeffrey N. Schoess, Darryl Busch, and Sunil Menon "CH-46 rotor head acoustic fault detection analysis", Proc. SPIE 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (31 May 1999); https://doi.org/10.1117/12.349755

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