Apparatus and methods for variable sweep body conformal wing with application to projectiles, missiles, and unmanned air vehicles
First Claim
1. An unmanned air vehicle (“
- UAV”
) for delivery of a payload and for extended range operation comprising,a body, a body-conformal wing, wherein said body-conformal wing is configured to form the outer surface of said UAV body when it is an an un-deployed position, thereby having a seamless outer-mold-line conformal to the UAV body, the body conformal wing is of elliptical or quasi-elliptic platform shape and its airfoil designs are to satisfy the low drag and large lift to drag ratio requirement for optimal aerodynamic performance and to satisfy containment requirements under high-G conditions during a gun launch, further comprising in its un-deployed condition, an outer-mold-line completely compliant with that of an axi-symmetric body or a body of revolution, allowing it to be gun launched, tube launched or aircraft launched, a control pivot mechanism to actuate the wing to perform variable wing sweep and wing-incidence according to a pre-set schedule in order to achieve optimal flight performance throughout the trajectory, control surfaces for stability and for flight control, said control surfaces comprise a set of fins, for pitch-yaw control, said wing for roll control, canards for pitch-yaw control, wherein said fins are necessary for de-spinning and stabilizing, ascending and descending trajectories throughout a plurality of flight phases, wherein the UAV is in a ballistic trajectory phrase when in its ascending phase and a gliding trajectory phase in its descending phase, wherein said fins and a boat-tail are deployed in the ballistic phase, wherein said fins, said wing, a wing extension and canards are deployed during the gliding phase.
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Abstract
An unmanned air vehicle (“UAV”) apparatus is configured to have a body and a body-conformal wing. The body-conformal wing is configured to variably sweep from a closed position to a fully deployed position. In the closed position, the body-conformal wing span is aligned with the body axis and in the fully deployed position the body-conformal wing span is perpendicular to the axial direction of the body. Delivery of the UAV comprises the steps of: positioning the span of a body conformal wing in alignment with the axis of the body of the UAV; initiating the flight of the UAV; and adjusting the sweep angle of the body-conformal wing as a function of the current speed, altitude, or attack angle of the UAV, with the adjustment starting at a 0 degree position and varying between a closed position and a fully deployed position. The UAV also has a control mechanism configured to variably adjust the sweep of the body-conformal wing to achieve a high lift over drag ratio through out the flight path of the UAV.
138 Citations
29 Claims
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1. An unmanned air vehicle (“
- UAV”
) for delivery of a payload and for extended range operation comprising,a body, a body-conformal wing, wherein said body-conformal wing is configured to form the outer surface of said UAV body when it is an an un-deployed position, thereby having a seamless outer-mold-line conformal to the UAV body, the body conformal wing is of elliptical or quasi-elliptic platform shape and its airfoil designs are to satisfy the low drag and large lift to drag ratio requirement for optimal aerodynamic performance and to satisfy containment requirements under high-G conditions during a gun launch, further comprising in its un-deployed condition, an outer-mold-line completely compliant with that of an axi-symmetric body or a body of revolution, allowing it to be gun launched, tube launched or aircraft launched, a control pivot mechanism to actuate the wing to perform variable wing sweep and wing-incidence according to a pre-set schedule in order to achieve optimal flight performance throughout the trajectory, control surfaces for stability and for flight control, said control surfaces comprise a set of fins, for pitch-yaw control, said wing for roll control, canards for pitch-yaw control, wherein said fins are necessary for de-spinning and stabilizing, ascending and descending trajectories throughout a plurality of flight phases, wherein the UAV is in a ballistic trajectory phrase when in its ascending phase and a gliding trajectory phase in its descending phase, wherein said fins and a boat-tail are deployed in the ballistic phase, wherein said fins, said wing, a wing extension and canards are deployed during the gliding phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
- UAV”
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27. An unmanned air vehicle (UAV) delivery system comprising
a body, a body conformal wing, wherein said body conformal wing is configured to variably sweep from a closed position to a deployed position, wherein said body-conformal wing has a span which is aligned with the longitudinal axis of said body in said closed position, wherein the body-conformal wing is configured to pivot about an attachment point on said body and a pivot point on said body-conformal wing, wherein said attachment point is configured to be moveable in the for and aft directions, a control mechanism configured to variable adjust the sweep of said body conformal wing, an UAV acceleration device.
Specification