Dynamic Compatibility of Rotary-Wing Aircraft Propulsion Components

Abstract

A study of problems related to vibration and dynamic loads in helicopter propulsion systems was made. It was found that engine vibration, shaft whirling, and dynamic instabilities seriously limit helicopter performance and reliability. It is recommended that studies be made to justify an intelligent standardization of engine vibration limit specifications for helicopters, that impedance-mobility methods be developed for optimizing engine/ airframe interface design, that research and development of helicopter power transmission shafts and couplings be carried out to solve whirling problems, and that new methods and hardware be developed to eliminate torsional instabilities in helicopter drive systems with automatic fuel control.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1973
Accession Number
AD0761100

Entities

People

  • John M. Vance

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Drive Shafts
  • Engine Mounts
  • Engineering
  • Frequency
  • Gas Turbines
  • Generators
  • Helicopter Engines
  • Helicopters
  • Mechanical Engineering
  • Propulsion Systems
  • Reliability
  • Rotary Wing Aircraft
  • Turbines
  • Turboshaft Engines

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Control Systems Engineering.
  • Systems Analysis and Design