Engine/Airframe/Drive Train Dynamic Interface Documentation

Abstract

This report pertains to engine/airframe/drive train dynamic interface problems experienced by helicopters and the methodology used to avoid dynamic interface problems. The problem of low torsional frequency of the engine/ airframe/drive train dynamic system that results from the design philosophy of using a stationary main rotor mast enclosing a separate 'floating' torque drive shaft is addressed. The use of supercritical shafts and vibration isolators are described and mobility methods to preclude engine/airframe vibration problems are discussed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1978
Accession Number
ADA056956

Entities

People

  • Debashis Banerjee
  • James F. Needham

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Auxiliary Power Units
  • Computer Programs
  • Control Systems
  • Failure Mode And Effect Analysis
  • Fuel Systems
  • Fuselages
  • Helicopters
  • Measurement
  • Resonant Frequency
  • Rotary Wing Aircraft
  • Tail Rotors
  • Turbines
  • Vibration

Fields of Study

  • Engineering

Readers

  • Aerospace Engineering
  • Control Systems Engineering.
  • Electrical Engineering