Accession Number : AD0711359
Title : AIRSPEED INFLUENCE ON NOISE WITHIN FIXED- AND ROTARY-WING AIRCRAFT.
Descriptive Note : Research rept. Jan 66-Oct 69,
Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX
Personal Author(s) : Gasaway,Donald C.
Report Date : JUN 1970
Pagination or Media Count : 21
Abstract : The influence of increased motive power and airspeed on noise levels within 163 fixed- and rotary-wing aircraft is depicted in 9 noise-exposure envelopes. Increased power and airspeed resulted in increments in cockpit noise in all of these aircraft groups. Changes in acoustic spectra and speech interference are illustrated and described. (Author)
Descriptors : (*AIRCRAFT NOISE, *AIRSPEED), COCKPITS, SPEECH, INTERFERENCE, INTELLIGIBILITY, PROPELLER NOISE, ROTARY WINGS, AIRPLANE ENGINE NOISE
Subject Categories : Acoustics
Distribution Statement : APPROVED FOR PUBLIC RELEASE