System for controlling a projectile with maneuver envelopes
AssigneeBAE Systems Information and Electronic Systems Integration Inc.
InventorsPaul Zemany, Matthew Chrobak
Life of this patent
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Abstract
A guided projectile including a precision guidance munition assembly utilizes at least one maneuver envelope to optimally control movement of at least one canard to steer the guided projectile during flight. The maneuver envelopes optimize movements of the at least one canard that effectuate movement in either the range direction or the cross-range direction, or both. The maneuver envelope enables optimal timing such that maneuvering in one direction does not come at the expense of maneuver authority in the other direction.
Claims17
A precision guidance munition assembly for a guided projectile, comprising:
- a canard assembly comprising at least one canard coupled to the precision guidance munition assembly, wherein the at least one canard is moveable;
- and
- at least one non-transitory computer-readable storage medium carried by the precision guidance munition assembly having a set of instructions encoded thereon that when executed by at least one processor operates to aid in guidance, navigation and control of the guided projectile, wherein the set of instructions comprise:
- select a maneuver envelope that describes a control authority of the guided projectile, wherein the maneuver envelope comprises a plurality of command rings identifying an amount of ground maneuver per second as a function of time, based, at least in part, on a roll angle and a maximum canard deflection;
- predict an impact point of the guided projectile relative to a target;
- determine a miss distance based on the predicted impact point relative to the target;
- determine a maneuver command based on the maneuver envelope;
- and
- apply the maneuver command to move the at least one canard at an optimal time based, at least in part, on the maneuver envelope;
- and wherein when the maneuver command is applied during a first time interval the range increases and when the maneuver command is applied during a second time interval the range decreases.
A computer program product including one or more non-transitory machine-readable mediums having instructions encoded thereon that, when executed by one or more processors, result in a plurality of operations for guiding a projectile to a target, the operations comprising:
- selecting a maneuver envelope that provides a control authority of the projectile, wherein the maneuver envelope comprises a plurality of command rings identifying an amount of ground maneuver per second as a function of time, based, at least in part, on a roll angle and a maximum canard deflection;
- predicting an impact point of the projectile relative to the target;
- determining a miss distance based on the predicted impact point relative to the target;
- determining a maneuver command based on the maneuver envelope;
- applying the maneuver command to move at least one canard of the projectile at an optimal time based, at least in part, on the maneuver envelope;
- and wherein when the maneuver command is applied during a first time interval the range increases and when the maneuver command is applied during a second time interval the range decreases.
Dependencies are inferred from the claim text.