Accession Number:

AD0677349

Title:

AN INVESTIGATION OF THE NEAR NOISE FIELDS OF A CHOKED AXISYMMETRIC AIR JET,

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s):

Report Date:

1968-06-01

Pagination or Media Count:

38.0

Abstract:

An experimental investigation was completed of the near sound field of a choked axisymmetric air jet of 2.25-in diameter. The results include surveys of the sound pressure levels in the area surrounding the jet and the identification of various screech frequencies. A schlieren system with stroboscopic spark synchronisation was used to photograph an axisymmetric mode and a spiralling mode of the jet oscillations. Author

Subject Categories:

  • Aerodynamics
  • Acoustics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE