Helicopter Gearbox Fault Detection: A Neural Network Based Approach

[+] Author and Article Information
M. R. Dellomo

The MITRE Corporation, McLean, VA 22102

J. Vib. Acoust 121(3), 265-272 (Jul 01, 1999) (8 pages) doi:10.1115/1.2893975 History: Received June 01, 1992; Revised May 01, 1994; Online February 26, 2008


One of the most dangerous problems that can occur in both military and civilian helicopters is the failure of the main gearbox. Currently, the principal method of controlling gearbox failure is to regularly overhaul the complete system. This paper considers the feasibility of using a neural network to perform fault detection on vibration measurements given by accelerometer data. The details and results obtained from studying the neural network approach are presented. Some of the elementary underlying physics will be discussed along with the preprocessing necessary for analysis. Several networks were investigated for detection and classification of the gearbox faults. The performance of each network will be presented. Finally, the network weights will be related back to the underlying physics of the problem.

Copyright © 1999 by The American Society of Mechanical Engineers
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