Study On General Correlative Technology Of Terminal-sensitive Submuniton For Missile

The terminal-sensitive submunition for missile is a kind of new idea smart munitions. It is put forward for increasing the strike power of the missile and increasing the strike range of the terminal-sensitive projectile. On the base of the general structure design, the ballistic problems, the aerodynamic heating problems, the damage probability problems and etc are studied in this paper. The results can give the engineering development of the terminal-sensitive submunition for missile strongly supports in theory.According to the working process and the tactical technical requirements, the general structure of the terminal-sensitive submunition for missile is primary designed. The technology for space recovery is applied in the design of the terminal-sensitive submunition, and a primary project for two stages decelerating and dispinning system is designed. Also, the central controller, the sensing device, the warhead and the control system are put forward.On that basis, the trajectory of the terminal-sensitive submunition is divided into three stages including the freely falling stage, the deceleration and dispinning stage and the stable scanning stage. In the freely falling stage, the submunition body is approximatively considered as a single particle, and a single particle ballistic model is founded. In the deceleration and dispinning stage, the submunition body is approximatively considered as a rigid body, the decelerating parachute is approximatively considered as a particle, and a particle-rigid dynamics ballistic model is founded. In the stable scanning stage, the submunition body is also approximatively considered as a rigid body, the parachute is approximatively considered as a flexible body, the joint ropes are considered as a spring, and a rigid-flexible coupled dynamics ballistic model is founded with the Kane's method. Then, the ballistic simulated results of the three stages are computed with MATLAB. The decelerating time of the freely falling stage is ensured by comparing different decelerating computed instances. The influence degree of the wind in the stable scanning stage is also computed and compared. The results can provide the general design of the terminal-sensitive submunition for missile and its tactical uses with some helpful references.Two aerodynamic heating engineering forecastable methods are put forward. One is...