초록 ▼

A projectile having a plurality of micro electromechanical (MEMS) devices disposed about the axis of flight for active control of the trajectory of the projectile. The MEMS devices each form an integral control surface/actuator. Control circuitry installed within the projectile housing includes both

A projectile having a plurality of micro electromechanical (MEMS) devices disposed about the axis of flight for active control of the trajectory of the projectile. The MEMS devices each form an integral control surface/actuator. Control circuitry installed within the projectile housing includes both rotation and lateral acceleration sensors. Flap portions of the MEMS devices are extended into the air stream flowing over the projectile in response to the rate of rotation of the projectile, thereby forming a standing wave of flaps operable to impart a lateral force on the projectile. MEMS devices utilizing an electrostatically controllable rolling flap portion provide a large range of motion while consuming a small amount of power. The MEMS devices may be arranged in longitudinal strips along an ogive portion of the projectile. Packaging concepts for projectiles as small as a 30 caliber bullet are described.

대표청구항 ▼

1. An airborne vehicle comprising:a housing; a plurality of electrostatic micro electromechanical (MEMS) devices attached to the housing, each MEMS device comprising an integral control surface/actuator and having a flap portion adapted to move between a withdrawn position and an extended position;

1. An airborne vehicle comprising:a housing; a plurality of electrostatic micro electromechanical (MEMS) devices attached to the housing, each MEMS device comprising an integral control surface/actuator and having a flap portion adapted to move between a withdrawn position and an extended position; and actuator circuitry connected to the MEMS devices for selectively moving at least one of the flap portions into and out of an air stream passing over the airborne vehicle.