Patent ID: 7762195
Filing Date: 2010-07-27
Classification: F02K,F42C

Abstract:
1. A gas generating propulsion system, comprising: an igniter containing an igniter propellant; a rocket motor coupled to said igniter and having a housing containing a main propellant, a rocket motor throat and a nozzle; a volume of auto igniter in flame communication with at least one of said igniter propellant and said main propellant, said volume effective to substantially consume said igniter propellant without exceeding a maximum pressure design limit of said igniter; and a gas release port extending through a portion of said rocket motor, said gas release port having a variable diameter through bore in fluid communication with said main propellant, said through bore having a variable area that, in a safe operation position, forms an open area with a first cross-section effective to discharge gas generated by said main propellant such that a pressure increase within said housing remains below both a debris generating value and a propulsive thrust value for said rocket motor during transport and storage and, in an armed operation position, forms an obstructed area with a second cross-section effective to enable the system to generate a pressure increase and discharge high thrust combustion gases.