Patent ID: 9587923
Date: 2017-03-07
CPC Classifications: F42B

Claim:
1. A guiding assembly adapted to be connected to a projectile, comprising: a rear main unit adapted to be connected at its rear side to a front end of said projectile, said rear main unit having a central longitudinal axis; a front main unit rotatably connected at its rear end to a front end of said rear main unit and adapted to rotate about said central longitudinal axis; a relative speed control unit operable between said rear main unit and said front main unit and capable of providing spin braking force to slow the relative speed of rotation of said front main unit, wherein said braking force is controllable; two guiding fins radially extending from said front main unit, wherein each of said guiding fins is shaped as a flat aerodynamic element having a fin chord extending from the front end of the fin to the rear end of the fin and residing in a plane parallel to said central longitudinal axis, said chord of said fin forms a pitch angle with said central longitudinal axis in said plane parallel to said central longitudinal axis; and a return spring, operably connected to said guiding fins, wherein said spring is configured to allow movement correspondingly to aerodynamic pressure on the fins, and wherein said pitch angle is controllable by said spring.