Experiments in External Noise Reduction of Light Airplanes

Abstract

The present work is part of a program, the objective of which is to find practicable ways of reducing the external noise level of light airplanes in order to make them less objectionable to persons on the ground. This report covers noise measurements on standard light airplanes and on similar airplanes equipped with engine mufflers, propeller reduction gears, and propellers with various numbers of blades and blade shapes.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1950
Accession Number
ADA380552

Entities

People

  • C. F. Taylor
  • Fred S. Elwell
  • John P. Roberts
  • Leo L. Beranek

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustics
  • Aircrafts
  • Airframes
  • Airplanes
  • Blimps
  • Engine Mufflers
  • Exhaust Systems
  • Ground Speed
  • Landing Gear
  • Level Flight
  • Measurement
  • Mufflers
  • Noise Reduction
  • Propeller Blades
  • Propeller Noise
  • Propellers
  • Standards

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Aerospace Engineering
  • Systems Analysis and Design