Improvements in Spiral-Bevel Gears to Reduce Noise and Increase Strength.

Abstract

Advanced-design spiral-bevel gears were tested in an OH-58D helicopter transmission using the NASA 500-hp Helicopter Transmission Test Stand. Four different gear designs were tested. The four designs tested were the current design of the OH-58D transmission, a higher-strength design the same as the current but with an increased fillet radius to reduce gear tooth bending stress, and two versions of a lower-noise design the same as the high-strength but with modified tooth geometry to reduce transmission error and noise. Noise, vibration, and tooth strain tests were performed and significant gear stress and noise reductions were achieved.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1994
Accession Number
ADA290193

Entities

People

  • David G. Lewicki
  • Faydor L. Litvin
  • Robert F. Handschuh
  • Zachary S. Henry

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bending Stress
  • Frequency
  • Gears
  • Geometry
  • Low Noise
  • Machine Tools
  • Measurement
  • Military Research
  • Noise
  • Noise Reduction
  • Spiral Bevel Gears
  • Strain Gages
  • Stresses
  • Tensile Stress
  • Test Stands
  • Two Dimensional
  • Vibration

Readers

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