Computerized Life and Reliability Modelling for Turboprop Transmissions.

Abstract

A generalized life and reliability model is presented for parallel shaft geared prop-fan and turboprop aircraft transmissions. The transmission life and reliability model is a combination of the individual reliability model for all the bearings and gears in the main load paths. The bearing and gear reliability models are based on classical fatigue theory and the two parameter Weilbull failure distribution. A computer program was developed to calculate the transmission life and reliability. The program is modular. In its present form, the program can analyze five different transmission arrangements. However, the program can be modified easily to include additional transmission arrangements. An example is included which compares the life of a split-torque, parallel compound two-stage transmission, as calculated by the computer program. (jes)

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Document Details

Document Type
Technical Report
Publication Date
Jul 13, 1988
Accession Number
ADA195935

Entities

People

  • D. G. Lewicki
  • J. J. Coy
  • K. C. Radil
  • M. Savage

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aeronautics
  • Army Aviation
  • Bearings
  • Computer Programs
  • Computers
  • Equations
  • Fatigue Life
  • Gears
  • High Reliability
  • Planetary Gears
  • Probability
  • Procedures (Computers)
  • Reliability
  • Rotation
  • Survival
  • Turboprop Engines
  • Two Dimensional

Fields of Study

  • Engineering

Readers

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