Positive-Engagement Clutch

Abstract

Overrunning clutches are universally used in helicopter drive systems to couple the engine and rotor in powered flight while permitting rotor autorotation with the engine stopped. The clutches in current use depend on friction for power transmission, and suffer from structural inefficiency which imposes a weight penalty and centrifugal influences which restrict operating speed. The positive-engagement overrunning clutch described herein offers the possibility of better structural efficiency and lifting of the overrunning speed limitation. This clutch transmits power through splines, and suffers no detriment to overrunning operation from centrifugal force. A positive- engagement clutch was designed to meet the operating and space requirements of the HLH helicopter, and a test program was conducted to explore the operating characteristics of the clutch.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1973
Accession Number
AD0775835

Entities

People

  • Charles J. Wirth

Organizations

  • Kaman Corporation

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Assembly
  • Axial Loads
  • Dynamic Tests
  • Frequency
  • Friction
  • Governments
  • Long Life
  • Lubricating Oils
  • Lubrication
  • Resonant Frequency
  • Static Tests
  • Tensile Strength
  • Test And Evaluation
  • Test Facilities
  • Test Methods
  • Vibration

Readers

  • Aerospace Engineering
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Hall-Effect Thruster