Accession Number:

ADA012374

Title:

Commercial Aircraft Noise Definition - L-1011 Tristar. Volume IV-Program Design Specification.

Descriptive Note:

Final rept. Jun 73-Sep 74,

Corporate Author:

LOCKHEED-CALIFORNIA CO BURBANK

Personal Author(s):

Report Date:

1974-09-01

Pagination or Media Count:

126.0

Abstract:

Calculation procedures to describe airplane noise during takeoff and approach have been programmed for batch operation on a large digital computer. Three routines are included. The first normalizes far-field noise spectra to reference conditions and then determines spectra at various distances from the airplane, for airport elevations between sea level and 6000 feet and ambient temperatures between 30F and 100F. Overall sound pressure levels, A-weighted noise levels, perceived noise levels, and effective perceived noise levels are calculated. The second routine uses aerodynamic and engine thrust data to produce takeoff and approach flight path description. Volume 4 describes the computer program and gives instructions for its operation.

Subject Categories:

  • Civilian Aircraft
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE