Patent ID: 7755012

Claim:
A projectile comprising: a body configured to spin about a projectile longitudinal axis during flight along a flight path; an aerodynamic device coupled to a shaft carried by the body; a crank coupled to the shaft, a general back and forth motion of the crank causing an oscillating motion of the shaft and the aerodynamic device; a motor; a drive arrangement interposed between the crank and the motor for translating unidirectional rotational motion of the motor into generally limited oscillating, back-and-forth motion of the crank and of the aerodynamic device relative to the body of the projectile; and a controller for controlling the velocity and phase of the unidirectional rotational motion of the motor to create the oscillating, back-and-forth motion of the crank and aerodynamic device in synchronism with the spinning of the body to control the flight path of the projectile.