Accession Number:

AD0780824

Title:

On Acoustic Efficiency of Supersonic Annular Jets,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

• Lyutii,V. O.

Report Date:

1974-06-04

Pagination or Media Count:

9.0

Abstract:

Acoustic emission of a supersonic annular jet takes place both into the space surrounding the jet and into the inner area, which is formed by a central nozzle body with an annular critical cross section. The level of emission into the outside sonic space probably does not differ in any way from the level of acoustic emission of a single supersonic cylindrical jet. Hence, the total power of an acoustic emission will be equal to the acoustic emissions of the annular jet into an outside space and toward the bottom edge of the central body.

Descriptors:

• *ANNULAR NOZZLES
• *ACOUSTIC PROPERTIES
• EFFICIENCY
• MILITARY FORCE LEVELS
• TRANSLATIONS
• USSR

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE