A Missile Separation Of Modeling And Simulation

The research of separate characteristic is a key technique of system design of guided missile. It is also the critical project to the system design of two-stage missile, it affects the fighting efficiency of weapon system heavily. The research of separate characteristic involves analytical of the system function, aerodynamics, flight dynamics and trajectory design etc. In order to research the project ,we have to have a good command of the correlative theories and profession.For the project,we mainly consider stability of the separation,less pollution, shorter of separate time, mature of technology etc. We synthesize domestic and international various separation project, and combine the characteristics of the missile oneself, making sure to project of explosive rivet.It is very important for the stability of separation that considering the dynamic characteristic of elastic missile body and the force of stage separation.During the separation,we see missile as a elastic body,and according to the dynamic model, we build up the motion equation of missile.And then making use of the Routh Criterion , we get the criterion of stage separation—" vibration, non- period sport stability".Moreover according to objective function of minimal force of separation and unreversed force of separation, we get another two criterion. According to the criterion and motion equation, programming with VC++,we mainly apply four steps Runge-Kutta to solve the differential equations.During studying the characteristic of separation,it is such factors as separation that 1 and 2 stage's statically stable derivative,thrust misalignment, disturbance of de-orbiting,control force,combustion instability in solid rocket motors,gust and stream sturbulence behind missile, etc that will do harm to separation.So we simulate the main interference of separation and analyse it's negative influence,to improve our design.Because missile is controlled before the separation,and missile's speed is more than 1300m/s.So interference of separation is more serious ,and the research of separation is very important.For the secrecy,there are little information ,moreover separation under the high speed missile in domestic are rare.So the research of this project certainly have academic meaning and the explicit engineering application value.