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Optics and AcousticsAcoustics

Comparison of Transmission Error Predictions With Noise Measurements for Several Spur and Helical Gears

Authors: Donald R. Houser; Fred B. Oswald; Mark J. Valco; Raymond J. Drago; Joseph W. Lenski; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
Abstract:
Measured sound power data from eight different spur, single and double helical gear designs are compared with predictions of transmission error by the Load Distribution Program. The sound power data was taken from the recent Army-funded Advanced Rotorcraft Transmission project Tests were conducted in the NASA gear noise rig. Results of both test data and transmission error predictions are made for each harmonic of mesh frequency at several operating conditions. In general, the transmission error predictions compare favorably with the measured noise levels. (AN)

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Technical memo.
Pages: 12
Report Date: JUN 94
Report Number: A403092
Keywords relating to this report:
*GEAR NOISE
*TRANSMISSION GEARS
ALGORITHMS
BENDING MOMENTS
COMPARISON
COMPUTER PROGRAMS
CORRELATION
ERROR ANALYSIS
ERRORS
EXPERIMENTAL DATA
GEAR TEETH
HARMONICS
LOAD DISTRIBUTION
MATHEMATICAL MODELS
MATHEMATICAL PREDICTION
MESH
NOISE REDUCTION
SOUND PRESSURE
TEST AND EVALUATION
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