Inventors:
Robert L. Sackheim - Madison AL, US
John J. Hutt - Decatur AL, US
William E. Anderson - West Lafayette IN, US
Gordon A. Dressler - Manhattan Beach CA, US
Assignee:
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC
International Classification:
F02K003/00
F02K007/00
F02K009/00
F02K009/74
F02K009/76
US Classification:
60224, 60257, 60258, 60770
Abstract:
A rocket engine assembly is provided for a vertically launched rocket vehicle. A rocket engine housing of the assembly includes two or more combustion chambers each including an outlet end defining a sonic throat area. A propellant supply for the combustion chambers includes a throttling injector, associated with each of the combustion chambers and located opposite to sonic throat area, which injects the propellant into the associated combustion chamber. A modulator, which may form part of the injector, and which is controlled by a controller, modulates the flow rate of the propellant to the combustion chambers so that the chambers provide a vectorable net thrust. An expansion nozzle or body located downstream of the throat area provides expansion of the combustion gases produced by the combustion chambers so as to increase the net thrust.