Research Of Surface-surface Missile Ballistic Penetration Technology

Today, that the Anti-Defence technologies are less advanced than the Defence technologies is one of the most severe problems meeted by ballistic missile. So, to develop the Anti-Defence technologies is a important mean to improve the survival ability of ballistic missiles. This thesis research on a kind of anti-defence technology named wary trajectory technology, which inherits from mobile changeable trajectory technology. Aimmed to retard the response of ballistic missile defence system, the wavy trajectory with three crests is designed in this thesis to replace traditional parabola one. This kind of trajectory make Anti-defence system have lots of difficulties to detect and compute the track and destination of ballistic missiles before reentry. So, Applying the Wavy trajectory can greatly improve the Anti-defence ability of ballistic missiles.In this thesis, based on Pershing II surface to surface missile, a new kind of ballistic missile was designed with an additional rocket engine, which can be ignited twice. Firstly, aerodynamic computational models of missile body and warhead which reentry with supersonic are built according to the task requirements; Secondly, the propulsion system model of missile is built whose first two stages are solid rocket engines and the third stage is liquid-solid combined rocket engine. The nozzle and the shape of the engine are designed to meet the needs of the populsion project; Thirdly, the trajectory model of the mass point is built and a wavy trajectory is designed& optimized; Finally ,the ability of a missile's breaking through defence is analyzed. From the results, we can see that the ability of Breaking through defence of a missile with a wavy trajectory is stronger than those with traditional parabola trajectories.