Core Engine Noise Control Program. Volume 2. Identification of Noise Generation and Suppression Mechanisms

Abstract

The mechanisms of noise generation and suppression for the various core engine noise sources in turbofans were defined through a balanced analytical and experimental program. Model, component, and engine tests were used to substantiate the results of the analysis and to determine the basic noise generating parameters. The results were cast in a general form so as to be applicable to a wide variety of cycles, including future technology turbofan engines. Several suppression concepts were identified through analysis and through logical extension of experience with earlier programs on on high velocity jet noise and fan/compressor noise research. The suppression concepts were validated through model and component tests and through evaluation of available engine data.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1974
Accession Number
ADA013129

Entities

People

  • D. Latham
  • H. Morozumi
  • J. J. Emerling
  • K. R. Bilwakesh
  • P. R. Knott
  • R. K. Matta
  • S. B. Kazin
  • W. S. Clapper

Organizations

  • General Electric

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Properties
  • Acoustics
  • Aerodynamic Characteristics
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Fluid Dynamics
  • Frequency Bands
  • Jet Engine Fuels
  • Measurement
  • Mechanics
  • Pressure Distribution
  • Pressure Measurement
  • Test Facilities
  • Turbines
  • Turbojet Engines
  • Turbulent Mixing

Readers

  • Acoustics.
  • Aerospace Engineering
  • Theoretical Analysis.