Accession Number:

ADD002433

Title:

Infrared Plume Enhancement.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s):

• Holzman,Allen L.

Report Date:

1976-02-26

Pagination or Media Count:

10.0

Abstract:

The patent application relates to a method whereby an infrared plume is enhanced by the injection of both fuel and oxidizer into the nozzle divergence to generate a supersonic plume which acts as a hot pilot for the external combustion which cannot sustain without it. By secondary injection of both fuel and oxidizer at levels of 10 to 40 per cent of the main flow rate into the nozzle divergence, the plume infrared is increased by a factor of 2 to 6, thereby making it possible to enhance the exhaust infrared to levels normally attainable only in quiescent air.

Descriptors:

• *Guided missile targets
• *Infrared signatures
• *Plumes
• External burning
• Secondary injection
• Supersonic combustion

Subject Categories:

• Guided Missiles
• Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE