Noise of High-Performance Aircraft at Afterburner

Abstract

The main objective of this project is to obtain a fundamental understanding of the physics of noise generation of a high performance aircraft operating at afterburner condition. The new noise components are indirect combustion noise produced by the passage of entropy waves through the nozzle of the jet. To obtain a good understanding of the noise generation processes through numerical simulation, it is imperative that a way be found to reproduce such a random wave field with prescribed statistical averaged properties computationally. Here the development of a one-dimensional computational model capable of generating a broadband entropy wave field with a prescribed intensity and frequency spectrum is reported.

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Document Details

Document Type
Technical Report
Publication Date
Mar 30, 2015
Accession Number
ADA616071

Entities

People

  • Christopher Tam

Organizations

  • Florida State University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Afterburners
  • Aircrafts
  • Boundaries
  • Broadband
  • Combustion
  • Cross Correlation
  • Demographic Cohorts
  • Engines
  • Equations
  • Euler Equations
  • Frequency
  • Hot Spots
  • Intensity
  • Jet Engines
  • Simulations
  • Spectra
  • Statistics

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Combustion and Flow Dynamics.
  • Computational Modeling and Simulation