Design and simulation of new stage separation scheme

A new stage separation scheme of missile was designed. The separation process combined the benefits of cool stage separation and thermal stage separation, and solid propellant gas generator and reverse thrust engines were used as separation energy. A proper separation method and separation time sequence were put forward. The dynamic and kinetic model and collision detection model were constructed. The impacts of many factors on separation were considered, including engine thrust deviation, eccentricity and deflection of spent stage residual thrust. The movement range of separation bodies was analyzed with Monte-Carlo method, and the relative lateral movement range of center point at separation danger moment was obtained. During simulation of target practice, no collision occurs and relative movement of separation bodies is in the demanding range, which verifies safety and feasibility of this new separation scheme.