Accession Number : ADD011112

Title :   Expendable Infrared Source and Method Therefor.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Hodgkins,H L ; Reingruber,J K ; Harwell,K E

Report Date : 05 Jun 1984

Pagination or Media Count : 5

Abstract : This abstract discloses an IR source and method for generating IR radiation whereby a propellant is burned in a first chamber to produce a product gas which is exited through a critical exit. The gas is accelerated to a supersonic velocity by expanding into a second chamber, is passed through a standing shock wave in the chamber to reduce the gas velocity to a subsonic level, is exited through radial orifices into a larger third chamber were the gas is mixed to obtain a substantial uniformity in temperature and specie. The gas is then accelerated by expansion to a chosen subsonic velocity, and is exhausted to the atmosphere.

Descriptors :   *Patents, *Infrared radiation, *Propellants, *Combustion, Sources, Gases, Excitation, Acceleration, Supersonic flow, Reduction, Combustion chambers, Shock waves, Subsonic flow, Mixing, Exhaust gases, Radiant intensity, Rocket nozzles, Combustion products, Burning rate, Methodology

Subject Categories : Optics
      Combustion and Ignition
      Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE