CRITERIA AND SUMMARY OF PERFORMANCE OF PORTABLE GROUND RUNUP SUPPRESSORS FOR JET AIRCRAFT,

Abstract

Acoustical performance requirements are developed for portable ground runup turbojet engine noise suppressors. The criteria from which the per formance requirements are developed are based fundamentally on the known data regarding sound induced temporary and permanent hearing impair ment, communication criteria developed and the results of a noise exposure survey carried out at twenty-two Air Force bases. A main result is that a residual noise level rather than a noise reduction method of acoustical evaluation is recommended. The experience and data of past suppressor evaluations is used to define the current technology of noise suppressor design and to outline areas for future research and development. Also developed are standard pro cedures and specifications for the acoustical evaluation of a portable ground runup noise suppressor. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1963
Accession Number
AD0426663

Entities

People

  • John W. Little
  • Jose C. Ortega

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Engine Noise
  • Engines
  • Jet Aircraft
  • Noise
  • Noise Reduction
  • Specifications
  • Standards
  • Suppressors
  • Test And Evaluation
  • Turbojet Engines

Readers

  • Acoustics.
  • Aerospace Test and Evaluation
  • Systems Analysis and Design