The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 1987
Filed:
Aug. 02, 1985
William R Wagner, Los Angeles, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
The present invention provides a rocket thrust chamber (30) comprising a combustor (32) with a fixed divergent profile, a nozzle (36) for further expanding the output of the divergent combustor and a high-velocity, throttleable injector (34) for injecting propellants at such an initial velocity and initially rapid, axial burning rate that the injected propellants achieve sonic flow conditions at preselected locations within the divergent combustor according to throttle setting. In operation, the throttle setting fixes the location of the sonic flow line within the divergent combustor, and the ratio of the nozzle exit area with respect to the effective area of the divergent combustor at the sonic location area fixes the expansion ratio for that throttle setting. At launch, the engine delivers a high propellant flow rate and a moderate expansion ratio, while in space, it delivers a low propellant flow rate and a far greater expansion ratio.