ACOUSTICAL STUDY OF THE CH-47B (CHINOOK) HELICOPTER

Abstract

Sound measurements were conducted in the CH-47B (Chinook) Helicopter under conditions of normal cruise, maximum continuous power, level flight at various air speeds, hover, level acceleration and deceleration, and partial- power descent. Results are presented and compared with applicable parts of Military Specification MIL-A-8806 and U. S. Army Human Engineering Laboratories Standard S-1-63B. Variations of the noise from that specified in these documents are discussed, and it is recommended that the noise be reduced to conform to the specified levels.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1968
Accession Number
AD0670971

Entities

People

  • Thomas S. Bragg

Organizations

  • Human Engineering Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Deceleration
  • Engineering
  • Engineers
  • Flight
  • Frequency
  • Frequency Bands
  • Ground Effect
  • Helicopters
  • Human Factors Engineering
  • Level Flight
  • Measurement
  • Microphones
  • Plastic Explosives
  • Recording Systems
  • Sound Pressure
  • Tape Recorders

Readers

  • Acoustics.
  • Aviation Science / Aeronautics.