Abstract:
A solid-fuel pellet thrust and control actuation system (PT-CAS) provides command authority for maneuvering flight vehicles (10) over subsonic and supersonic speeds and within the atmosphere and exo-atmosphere. The PT-CAS includes a chamber (26) of solid-fuel pellets (28) that are ignited to expel gas through a throat (30). The expelled gas (34) is directed at supersonic vehicle speeds in atmosphere to a cavity (19) between an aero control surface (12) and the airframe (13) to pressurize the cavity (19) and deploy the surface (12) or at subsonic speeds in atmosphere or any speed in exo-atmosphere allowed to flow out a through-hole (14) in the surface where the throat (30) and through-hole provide a virtual converging/diverging nozzle (72) to produce a supersonic divert thrust. A pellet and control actuation system (P-CAS) without the through-hole (14) provides command authority at supersonic speeds in atmosphere. A restrictor mechanism (42) controls the bleed of pressurized gas from the cavity (19) to the external environment to achieve a deployment time objective for either the PT-CAS or P-CAS.
Abstract:
A solid-fuel pellet thrust and control actuation system (PT-CAS) provides command authority for maneuvering flight vehicles over subsonic and supersonic speeds and within the atmosphere and exo-atmosphere. The PT-CAS includes a chamber of solid-fuel pellets that are ignited to expel gas through a throat. The expelled gas is directed at supersonic vehicle speeds in atmosphere to a cavity between an aero control surface and the airframe to pressurize the cavity and deploy the surface or at subsonic speeds in atmosphere or any speed in exo-atmosphere allowed to flow out a through-hole in the surface where the throat and through-hole provide a virtual converging/diverging nozzle to produce a supersonic divert thrust. A pellet and control actuation system (P-CAS) without the through-hole provides command authority at supersonic speeds in atmosphere. A restrictor mechanism controls the bleed of pressurized gas from the cavity to the external environment to achieve a deployment time objective for either the PT-CAS or P-CAS.
Abstract:
Methods and apparatus for a transforming aerial vehicle according to various aspects of the present invention may operate in conjunction with a launch system configured to rotate the aerial vehicle about its longitudinal axis. A lifting surface pivotally connected to the aerial vehicle may be positioned such that the rotation of the aerial vehicle causes the lifting surface to generate a lifting force on the aerial vehicle. This lift causes the aerial vehicle to rise gyroscopically before the lifting surface is rotated to a second position such that the aerial vehicle transforms from a gyroscopic mode to a fixed-wing aerial vehicle. The lifting surface may then be rotated again to allow the aerial vehicle to land as an auto gyro.