OH-58A Propulsion System Vibration Investigation

Abstract

The report presents the results of an investigation of the OH-58A helicopter and Allison T-63 engine vibration characteristics. The investigation was directed toward the determination of engine response using impedance/ mobility methods and NAsa Structural ANalysis (NASTRAN). The results of these studies are compared with each other, with results from independent vibration tests of the airframe and engine, and with engine vibration levels measured during flight testing of the OH-58A helicopter. The objective was to determine the parameters defining the vibratory interaction and to provide a common language for engine/airframe interface analysis and for preparation of engine/ airframe specifications.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1974
Accession Number
ADA002672

Entities

People

  • James A. White

Organizations

  • Bell Flight

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acquisition
  • Aircraft Equipment
  • Airframes
  • Computer Programs
  • Data Acquisition
  • Data Processing
  • Helicopters
  • Measurement
  • Numerical Analysis
  • Propulsion Systems
  • Resonant Frequency
  • Test And Evaluation
  • Test Equipment
  • Three Dimensional
  • Turbines
  • Turboshaft Engines
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Structural Dynamics.