Patent ID: 8193476

Claim:
A control actuation system (CAS) for providing command authority to maneuver an air vehicle through a free stream in an external environment, comprising: an airframe; at least one aerodynamic control surface on the airframe pivotable about a pivot point between a retracted position out of the free stream and deployed positions in the free stream flowing past the airfame to provide drag that maneuvers the airframe; a cavity positioned aft of the pivot point between an all section of the control surface and the airframe; a restrictor mechanism; a chamber in said airframe, said chamber including one or more propellant chambers; a throat in said airframe that couples the chamber to the cavity; one or more solid-fuel pellets in each said propellant chamber; an ignition system disposed to ignite the solid-fuel pellets in one or more propellant chambers to expel gas that flows through the throat into the cavity to pressurize the cavity and actuate the control surface to a deployed position, said restrictor mechanism providing a controlled bleed of gas from the cavity to the external environment in said deployed position.