NASA/Army Rotorcraft Transmission Research, A Review of Recent Significant Accomplishments.

Abstract

A joint helicopter transmission research program between NASA Lewis Research Center and the U.S. Army Research Lab has existed since 1970. Research goals are to reduce weight and noise while increasing life, reliability, and safety. These research goals are achieved by the NASA/Army Mechanical Systems Technology Branch through both in-house research and cooperative research projects with university and industry partners. This paper reviews some recent significant technical accomplishments produced by this cooperative research. The following research projects are reviewed: oil-off survivability of tapered roller bearings, design and evaluation of high contact ratio gearing, finite element analysis of spiral bevel gears, computer numerical control grinding of spiral bevel gears, gear dynamics code validation, computer program for life and reliability of helicopter transmissions, planetary gear train efficiency study, and the Advanced Rotorcraft Transmission (ART) program.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1994
Accession Number
ADA289962

Entities

People

  • Timothy L. Krantz

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircraft Industry
  • Aircrafts
  • Airframes
  • Cargo Aircraft
  • Computer Programs
  • Contracts
  • Failure Mode And Effect Analysis
  • Gear Noise
  • High Temperature
  • Materials
  • Measurement
  • Military Research
  • Reliability
  • Teeth
  • Test And Evaluation
  • Tilt Rotor Aircraft
  • Vehicles

Readers

  • Aerospace Engineering
  • Technical Research and Report Writing.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).