Influence of Gear Design Parameters on Gearbox Radiated Noise.

Abstract

Spur and helical gears were tested in the NASA gear-noise rig to compare the noise produced by different gear designs. Sound power measurements were performed under controlled conditions for a matrix of operating conditions. Sound power was computed from near-field acoustic intensity scans taken just above the top surface of the gearbox. Test gears included four spur and five helical gear designs. The gears were designed to be as nearly identical as possible except for deliberate differences in tooth geometry and contact ratio. Test results are presented as a function of the gear design and operating conditions in the form of sound power charts and as narrow-band spectra. (AN)

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Document Details

Document Type
Technical Report
Publication Date
Sep 09, 1994
Accession Number
ADA290346

Entities

People

  • Denniss P. Townsend
  • Fred B. Oswald
  • Mark J. Valco
  • Raymond J. Drago
  • Robert H. Spencer

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Autonomy
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Band Spectra
  • Confidence Limits
  • Frequency
  • Frequency Bands
  • Gear Noise
  • Geometry
  • Helicopters
  • Intensity
  • Measurement
  • Military Research
  • Near Field
  • Noise
  • Noise Reduction
  • Power Levels
  • Power Measurement
  • Radiated Noise
  • Spectra

Readers

  • Acoustical Oceanography.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).