Accession Number:

AD0785485

Title:

Combustion Generated Noise in Turbopropulsion Systems.

Descriptive Note:

Interim rept. Jun 73-May 74,

Corporate Author:

GEORGIA INST OF TECH ATLANTA SCHOOL OF AEROSPACE ENGINEERING

Report Date:

1974-01-01

Pagination or Media Count:

69.0

Abstract:

Continuation of experimental and theoretical work on the problem of combustion generated noise in turbopropulsion systems is presented. Tasks completed during the current period have been a experimental and theoretical correlation of noise power and spectra from open premixed flames of propane, propylene, ethylene and acetylene-air, b crosscorrelation of C2 emission with the far field acoustic pressure, and c experimental and theoretical investigation of ducting effects upon the noise radiating capability of the flame. The noise radiation from simple flame types is now understood with sufficient theoretical and experimental detail that estimates may be made for combustion noise in turbopropulsion systems. Modified author abstract

Subject Categories:

  • Acoustics
  • Combustion and Ignition
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE