Rocket with backwards gliding recovery
OwnerPeter Curtis Alway, Robert Matthew Alwayinventors
Life of this patent
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Abstract
This invention is a long thin rocket that launches forward and glides backward after an ejection pitch maneuver with no moving parts. It takes advantage of a shift in center of pressure caused by a change in the angle of incidence of the rocket. This change in angle of incidence is caused by the side thrust pitch maneuver. The pitch maneuver is initiated by the ejection charge out a side thrust port or other side thrusting apparatus at a location on the rocket causing a large torque about the center of gravity of the rocket. The center of gravity of the rocket after the pitch is optimally less than 60% of the way between the Barrowman center of pressure and the center of lateral area center of pressure.
Claims14
A rocket comprising, fixed aerodynamic surfaces, a large length to diameter ratio, a fixed center of gravity between the Barrowman center of pressure and the center of lateral area wherein the center of gravity is less than 60% of the distance from the Barrowman center of pressure to the center of lateral area after the pitch maneuver, and a side thrusting means fixed on the rocket at a distance from the center of gravity sufficient to pitch the stable flying rocket in a manner to disrupt the aerodynamic stability of the rocket.
A model rocket or large model rocket comprising fixed aerodynamic surfaces, a large length to diameter ratio, fixed rearward mounted model rocket engine, and a side thrusting means fixed on the rocket at a distance from the center of gravity sufficient to pitch the stable flying rocket substantially perpendicular to the direction of flight wherein the center of gravity is less than 60% of the distance from the Barrowman center of pressure to the center of lateral area at engine ejection.
A model rocket comprising fixed aerodynamic surfaces, a body tube with a length to diameter ratio of at least 30 to 1, a fixed center of gravity after engine ejection less than 60% of the distance between the Barrowman center of pressure and the center of lateral area after the pitch maneuver, a fixed rearward mounted engine, and an ejection charge vent hole just below the nose cone.
Dependencies are inferred from the claim text.