Method for inhibiting nutation of stamping range-extending cannonball by adopting rudder

Abstract

The invention discloses a method for inhibiting nutation of a stamping extended-range shell by adopting a rudder, and the method comprises the following specific steps: 1, calculating a pitch angle speed instruction value omega yi of a steering engine according to a preset initial rolling speed of the stamping extended-range shell; 2, measuring the pitch angular velocity of the steering engine when the stamping extended-range cannonball generates initial nutation to obtain a pitch angular velocity measurement value omega y, and resolving the deflection angle of the steering engine in real time by adopting a PID algorithm according to the pitch angular velocity instruction value omega yi and the pitch angular velocity measurement value omega y; and the steering engine drives the stamping extended-range shell to deflect in the direction opposite to the initial nutation, and the deflection angle is so that the initial nutation of the stamping extended-range shell is restrained. According to the method, a steering engine is used for controlling the stamping range-extending cannonball to deflect in the direction opposite to initial nutation so as to restrain the initial nutation.

Description

technical field [0001] The invention belongs to the technical field of stamping extended-range shell control, in particular to a method for suppressing the nutation of stamping extended-range shells by using a rudder. Background technique [0002] For rolling ramming extended-range projectiles, due to the interlinkage of the longitudinal and lateral motions of the projectile, the movement is very complicated, and the spin of the projectile is very beneficial to improving shooting accuracy and eliminating errors caused by thrust eccentricity, so rolling The ram-extended-range projectile has been widely used. However, the ram-extended-range projectile produces the Magnus effect and the gyro effect due to the high-speed spin in the initial stage of flight, which produces an additional yaw force. Under the effect of , the nutation of the missile body occurs, and the nutation of the missile body affects the air intake of the engine, which in turn affects the combustion efficiency...

AI Technical Summary

Problems solved by technology

[0002] For rolling ramming extended-range projectiles, due to the interlinkage of the longitudinal and lateral motions of the projectile, the movement is very complicated, and the spin of the projectile is very beneficial to improving shooting accuracy and eliminating errors caused by thrust eccentricity, so rolling The ram-extended-range projectile has been widely used. However, the ram-extended-range projectile produces the Magnus effect and the gyro effect due to the high-speed spin in the initial stage of flight, which produces an additional yaw force. Under the effect of , the nutation of the missile body occurs, and the nutation of the missile body affects the air intake of the engine, which in turn affects the combustion efficiency and engine thrust, thereby finally affecting the range of the ram extended range projectile. has a greater impact on the range

After reviewing the data, at present, there are no effective suppression measures for nutation by stamping extended-range projectiles at home and abroad.

Images