초록 ▼

A projectile includes an elongated forebody and an aft section secured to the forebody. The aft section includes a pair of fins affixed to an aerodynamic, cylindrical section. The lift generated by the low-drag pair of fins is sufficient to counteract most foreseeable angles of attack to be experien

A projectile includes an elongated forebody and an aft section secured to the forebody. The aft section includes a pair of fins affixed to an aerodynamic, cylindrical section. The lift generated by the low-drag pair of fins is sufficient to counteract most foreseeable angles of attack to be experienced by the projectile. The aft section further includes a bearing that couples the aft section to the forebody of the projectile and is capable of allowing the aft section to rotate freely about the longitudinal axis of the projectile and independently of the forebody. Thus, during flight the aft section rotates into the maximum lift plane and provides a restoring moment to the projectile, thus providing necessary stability to the projectile while imparting minimum drag.

대표청구항 ▼

1. A projectile comprising:an elongated forebody that extends along a longitudinal axis; a tail section that is rotatably secured to the forebody; and a passive fin-stabilization system including only two stabilizing fins that are secured to the tail section, and that are capable of spinning freely

1. A projectile comprising:an elongated forebody that extends along a longitudinal axis; a tail section that is rotatably secured to the forebody; and a passive fin-stabilization system including only two stabilizing fins that are secured to the tail section, and that are capable of spinning freely and independently about the longitudinal axis of the forebody during an entire flight period allowing aerodynamic forces to orient the fins in a plane to provide optimal lift for decreasing an angle of attack and for maintaining stability.