Accession Number:

AD0702101

Title:

NOISE GENERATED BY SECONDARY AND AUXILIARY AIRCRAFT SYSTEMS.

Descriptive Note:

Final rept. 1 Nov 67-1 Nov 68,

Corporate Author:

SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s):

Report Date:

1969-12-01

Pagination or Media Count:

27.0

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

Subject Categories:

  • Aircraft
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE