Model Study of a Proposed Engineering Acoustic Research Facility (Etude sur Modele d'un Projet d'Installation de Recherches en Genie Acoustique)

Abstract

A one-twelfth scale aeroacoustic model of a proposed engineering acoustic research facility has been tested to assess the background noise levels in the anechoic measurement area, and to develop a suitable exhaust collector for deflected jet conditions. The facility comprises an open circuit, open jet wind tunnel with an anechoic space surrounding the test section. Collector configurations with acceptably low background noise and low sensitivity to jet deflection have been defined, but these features were achieved at the expense of some aerodynamic efficiency.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1976
Accession Number
ADA030639

Entities

People

  • F. Rueter
  • G. W. Johnston
  • M. S. Chappell

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Absorption
  • Acoustic Measurement
  • Aircrafts
  • Anechoic Chambers
  • Background Noise
  • Barometric Pressure
  • Cross Flow
  • Engineering
  • Flow
  • Frequency
  • High Lift
  • Jet Flow
  • Measurement
  • Mechanical Engineering
  • Pressure Measurement
  • Research Facilities
  • Short Takeoff Aircraft

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Combustion and Flow Dynamics.
  • Small Business Innovation Research Program (SBIR) EDI Research and Innovation.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster