The working Principle of Precision Guidance Kit

The precision guidance kit (Two-Dimensional Trajectory Correction Fuze Component) is installed at the detonator position on the head of the projectile. It utilizes the rotational motion of the projectile during flight to drive the magnetic torque generator to generae electricity. This controls the component's control surface angle at different angles relative to the projectile's rotation direction (hovering/variable speed), producing lift in different directions to correct the projectile's flight path and achieve trajectory correction objectives.

Viewed from the front of the projectile, the component's head deploys two pairs of fins. One pair of fins, installed in reverse differential mode (labeled "1 and 2"), is referred to as "steering fins," which provide the power for the servo motor rotation. The other pair of fins, installed in the same direction in parallel (labeled 3 and 4), is referred to as "control fins," which provide the corrective control force needed to adjust the projectile.
During the flight of the projectile, the satellite positioning and navigation system on the precision guidance component provides the real-time spatial position of the projectile. The onboard computer then calculates whether the projectile deviates from the predetermined trajectory based on its real-time position. When the projectile deviates from the predetermined trajectory, the onboard computer sends control commands to the servo motor, directing the "control fins" to "hover" at the specified angle. This action provides the corresponding flight control force to the projectile, correcting its path back to the predetermined trajectory and achieving the objective of trajectory correction.