STUDY OF HELICOPTER GEAR LUBRICATION.

Abstract

The report contains results of investigations along two lines: (1) studies of the effects of pretreatments on the fatigue life of gears, and (2) exploratory tests to determine the effects of extreme pressure (EP) additives on the mechanisms of surface damage, particularly fatigue pitting, in sliding and rolling contacts. The pretreatments include the application of precoatings, polishing to reduce surface roughness, and tempering hardened gears to give a range of hardnesses. All gear tests were conducted at a pinion speed of 1600 rpm.

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1965
Accession Number
AD0628446

Entities

People

  • D. R. Bailey
  • S. J. Beaubien

Tags

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Fatigue Life
  • Finishes
  • Hardness
  • Helicopters
  • Lubrication
  • Mechanical Properties
  • Physical Properties
  • Polishing
  • Roughness
  • Surface Finishing
  • Surface Properties
  • Surface Roughness
  • Tempering

Fields of Study

  • Materials science

Readers

  • Surface Engineering/Surface Coating Technology.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).