Advanced Technology VTOL Drive Train Configuration Study

Abstract

This report presents transmission system concepts that have been developed during a design investigation into single-rotor pure and compound helicopter drive trains. Specific areas considered in this study include torque dividing mechanisms supplying power to multiple load paths, redundant drives, and the use of epicyclic gearing for initial speed reduction. Recently, the free-planet planetary concept for parallel-axis speed reduction has been advanced for use in helicopter drive trains. A preliminary study incorporating this concept in a main gearbox is included.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1970
Accession Number
AD0867905

Entities

People

  • Graham White
  • James L. Lastine

Organizations

  • United Technologies Corporation

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Angular Motion
  • Army Aviation
  • Auxiliary Power Units
  • Failure Mode And Effect Analysis
  • Friction
  • Gas Turbines
  • Load Distribution
  • Manufacturing
  • Materials
  • Modulus Of Elasticity
  • Oil Coolers
  • Power Spectra
  • Roller Bearings
  • Sea Level
  • Turbines

Fields of Study

  • Physics

Readers

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