Research on Modification Method of Fire Control Parameters of a Vehicle-Mounted Antiaircraft Gun Based on Rigid-Flexible Coupling Model
Aiming at the influence of vehicle body attitude on the shooting accuracy of vehicle-mounted antiaircraft gun,a method based on rigid-flexible coupling model was proposed to modify the firing pa-rameters of the gun.Taking a vehicle-mounted antiaircraft gun as the research object,the rigid-flexible coupling model was established to predict the vehicle body attitude.The fire control system decom-posed the acquired vehicle body attitude response in the firing direction into the direction along the front and the direction perpendicular to the front in real time.After longitudinal,heeling and vehicle-reverse transformation,the vehicle unstable coordinate system was converted into the vehicle-borne ter-rain system.Then the target elements under the geographical system are transformed by longitudinal,heeling and vehicle-direction to obtain the gun firing elements under the unstable system of the vehicle,and the modified aiming elements are provided to the gun.In order to verify the feasibility and applica-bility of the modified method,another type of vehicle mounted gun was tested.The test results show that:After the modification,the firing accuracy of the gun is obviously improved,and the mean miss distance of the altitude and azimuth projectile in the initial firing of the gun is reduced by 53.1％and 41.3％,respectively.The correction effect is remarkable,and the research can provide a new idea for the fire control firing of the vehicle-mounted anti-aircraft gun.
fire control systemAttitude predictionfinite element methodRigid-flexible coupling modelfiring data
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