Vibration Measurements on the Rotor Shaft of the UH-1M Helicopter.

Abstract

This report describes a program of in-flight vibration measurements carried out on a platform mounted atop the rotor mast on the UH-1M helicopter. Results of a real time analysis of the data are presented which reveal that a low level of vibration exists at that site making it a good location for the future placement of fire control instrumentation. A mechanical impedance study is also presented which shows that much of the high frequency present in the acceleration-time histories is a result of resonances in the tested platform. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1976
Accession Number
ADA028924

Entities

People

  • Harvey I. Goldman

Organizations

  • Frankford Arsenal

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Frequency
  • Frequency Shift
  • Helicopters
  • Impedance
  • Instrumentation
  • Measurement
  • Measuring Instruments
  • Mechanical Impedance
  • Motion
  • Platforms
  • Resonance
  • Vibration

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Fluid Dynamics.
  • Inertial Navigation Systems.