Research On Characteristic Parameters Identification And Influence Of Enviromnt For The Underwater Trajectory Of Submarine Launched Missile

AS a kind of underwater launching weapon equipment,which are capable of launch platform hidden,high maneuver ability,and outstanding of combat,submarine-launched missiles have become a major research of the main weapons in all the leading powers of the world.And the underwater movement of SLBM(submarine-launched missiles)affects the water-exit attitude angle directly.Consequently,when the missile flying in the air,the ballistic' maneuver ability and the accuracy of attacking target will be affected.So the study of underwater trajectory is critical.At first,the dynamics model and kinematics model of SLBM's underwater trajectory is established.Combining the principle of optimal design with the real traffic data,a method of identifying the hydrodynamic coefficient of the missile is established.Using this method,the main hydrodynamic coefficients are identified successfully.This hydrodynamic coefficients identified are also verified with the real traffic data.Secondly,on the basis of the establishment of the submarine perturbing flow-field model,random wave model,and layered current model,simulated and analyzed the influences on underwater trajectory when the missile is lunched horizontal or vertical in different launch conditions and different marine environment.Results show that compared with missile launched horizontal,the missile launched vertical has stronger anti-interference ability with waves and currents.But when a missile launched by a moving submarine,the missile launched vertical would take larger lateral load.Finally,by establishing the simplified model for movement of the lunching platform,discussed the variations of movement of the submarine when it lunched the missile in different vehicle speed or lunching multiple missiles.The results show that,the launching load would arouse the heave movement,pitching,rolling,theloss of the navigation speed of submarine,and so on.When missile salvo firing,the location should be alternant between the bow and stern,in order to reduce the influences to the submarine.