Navy Coanda/Refraction Ground Noise Suppressor Program Plan,

Abstract

The Navy has been investigating techniques to reduce jet engine noise during ground run-up testing. The objective of this program is to continue the development of the Coanda/Refraction concept, investigated during the exploratory contracts, to attenuate the noise generated in the exhaust of turbojet/turbofan aircraft engines during ground run-up testing. Full scale design, fabrication and testing will be accomplished using the Coanda concept to validate the results obtained during the exploratory model studies and provide accurate noise reduction data. Concurrent with the full scale activity, additional model studies will also be conducted to evaluate the Coanda concept and its applicability to engines installed in airframes. This document defines the detail plan that will be followed to accomplish the overall plan. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 18, 1974
Accession Number
ADA107697

Entities

People

  • L. L. Burton
  • Robert E. Ballard

Organizations

  • Boeing

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Data Acquisition
  • Engine Noise
  • Engines
  • Fabrication
  • Flow
  • Frequency
  • Frequency Shift
  • Gas Turbines
  • Instrumentation
  • Jet Engine Noise
  • Jet Engines
  • Microphones
  • Noise
  • Noise Reduction
  • Turbines

Readers

  • Acoustics.
  • Aerospace Engineering
  • Systems Analysis and Design