NOISE GENERATED BY SECONDARY AND AUXILIARY AIRCRAFT SYSTEMS.

Abstract

A variety of noise-generating mechanisms contribute to the overall noise environment encountered within fixed- and rotary-wing aircraft. The report contains descriptions and illustrations of secondary and auxiliary systems found within aircraft which contribute to the composite noise. Types of noise-generating mechanisms include: (1) transmission, gear-reduction, and shaft distribution systems; (2) air-conditioning and pressurization systems; (3) defrosting systems; (4) air-distribution ducts and vents, and air- circulating and blower units; (5) ground and airborne auxiliary power units and systems; and (6) aerodynamic and aeroelastic disturbances, including devices such as air brakes and landing gear. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1969
Accession Number
AD0702101

Entities

People

  • Donald C. Gasaway

Organizations

  • United States Air Force School of Aerospace Medicine

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Conditioning
  • Airborne
  • Aircrafts
  • Airframes
  • Auxiliary Power Units
  • Brakes
  • Composite Materials
  • Environment
  • Landing Gear
  • Pneumatic Brakes
  • Pressurization
  • Rotary Wing Aircraft

Readers

  • Aerospace Engineering
  • Electrical Engineering
  • Internal Combustion Engine (ICE) Technology.