Helicopter Freewheel Unit Design Guide

Abstract

This report is intended to aid the transmission designer in selecting an overrunning clutch for use in a helicopter transmission. Preliminary sizing as well as detailed stress analysis procedures are presented for all aspects of spring, sprag, and ramp roller clutch designs. An example of the procedure for each clutch is included. Operation up to 20,000 rpm is feasible if the design procedures presented herein are followed.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1977
Accession Number
ADA047559

Entities

People

  • J. Kish

Organizations

  • United Technologies Corporation

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Aircraft Industry
  • Aircrafts
  • Auxiliary Power Units
  • Bearings
  • Bending Moments
  • Bending Stress
  • Center Of Gravity
  • Failure Mode And Effect Analysis
  • Friction
  • Geometry
  • Heat Treatment
  • Manufacturing
  • Materials
  • Mechanics
  • Modulus Of Elasticity
  • Tensile Strength

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Electrical Engineering
  • Systems Analysis and Design