Commercial Aircraft Noise Definition - L-1011 Tristar. Volume 3 - Program User's Manual

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 levels 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 3 presents the logic behind the calculations and outlines the computational procedures.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1974
Accession Number
ADA012373

Entities

People

  • Nathan Shapiro

Organizations

  • Lockheed Martin

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Aircraft Noise
  • Aircrafts
  • Airplanes
  • Band Spectra
  • Commercial Aircraft
  • Computer Programs
  • Computers
  • Far Field
  • Flight Paths
  • Glide Slope
  • Level Flight
  • Mach Number
  • Performance Tests
  • Sea Level
  • Sound Pressure
  • Test Methods

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Aerospace Engineering
  • Computer Science.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster