An aerodynamically improved bullet mounted atop a bullet and fired from a discharge chamber of a gun includes a bullet having a rear portion and a front portion that, together, defines an interior area. A rod having a linear and elongate configuration is movable between a retracted configuration completely inside the interior area and an extended configuration partially extending forwardly of the bullet the rod being pushed downstream by the gas pressures of the discharged bullet itself.

A rear slip base plate for a round carrying a guidance and control unit payload, which round is launched from a rifled launch tube. To prevent the guidance and control unit payload from also being rapidly spun with the round, the slip base plate unit mechanically isolates the guidance and control unit payload from the round spin rate.

A rear slip base plate for a round carrying a guidance and control unit payload, which round is launched from a rifled launch tube. To prevent the guidance and control unit payload from also being rapidly spun with the round, the slip base plate unit mechanically isolates the guidance and control unit payload from the round spin rate.

A method for controlling a flying projectile which rotates during flight, comprising: determining an angle of rotation of an inertial mass spinning about an axis during flight; and controlling at least one actuator for altering at least a portion of an aerodynamic structure, selectively in dependence on the determined angle of rotation and a control input, to control aerodynamic forces during flight. An aerodynamic surface may rotate and interact with surrounding air during flight, to produce aerodynamic forces. A sensor determines an angular rotation of the spin during flight. A control system, responsive to the sensor, produces a control signal in dependence on the determined angular rotation. An actuator selectively alters an aerodynamic characteristic of the aerodynamic surface in response to the control signal.

A method for controlling a flying projectile which rotates during flight, comprising: determining an angle of rotation of an inertial mass spinning about an axis during flight; and controlling at least one actuator for altering at least a portion of an aerodynamic structure, selectively in dependence on the determined angle of rotation and a control input, to control aerodynamic forces during flight. An aerodynamic surface may rotate and interact with surrounding air during flight, to produce aerodynamic forces. A sensor determines an angular rotation of the spin during flight. A control system, responsive to the sensor, produces a control signal in dependence on the determined angular rotation. An actuator selectively alters an aerodynamic characteristic of the aerodynamic surface in response to the control signal.

A firearm projectile is provided to promote a yaw effect on material entry by the projectile and to enhance wound channel formation on entered material. The firearm projectile comprises an elongated body, having a surface formed as a surface of revolution. It further consists of an ovoid forward portion and a cylindrical rear portion.

A firearm projectile is provided to promote a yaw effect on material entry by the projectile and to enhance wound channel formation on entered material. The firearm projectile comprises an elongated body, having a surface formed as a surface of revolution. It further consists of an ovoid forward portion and a cylindrical rear portion.

A projectile for use in a firearm ammunition cartridge, and a method of forming the projectile the projectile including a core, a jacket in which the core is disposed, the jacket having a closed rearward end and an open forward end, the forward end tapering inwardly toward a longitudinal centerline of the jacket to define an ogive portion of the projectile, and extending past a forward end of the core to form an open space inside the jacket between the forward end of the core and the forward end of the jacket, and a plurality of ventilation ports formed proximate the forward end of the jacket, each of the ventilation ports having a first opening on an inner surface of the jacket defining the open space, and a second opening on an outer surface of the jacket.

A firearm projectile is provided to promote a yaw effect on material entry by the projectile and to enhance wound channel formation on entered material. The firearm projectile comprises an elongated body, having a surface formed as a surface of revolution. It further consists of an ovoid forward portion and a cylindrical rear portion.

A firearm projectile is provided to promote a yaw effect on material entry by the projectile and to enhance wound channel formation on entered material. The firearm projectile comprises an elongated body, having a surface formed as a surface of revolution. It further consists of an ovoid forward portion and a cylindrical rear portion.