Numerical calculation and experiments for the opening process of missile launcher's cover

In order to study the method of opening the pre-and-post fragile cover by gas pressure when the missile was launched, the numerical simulation and experiment for a certain missile's opening cover technology were carried out by computational fluid technology and experiment method. The 2D model of missile and firing tube, as well as 3D model, was built. The research shows that the post-fragile-cover of the missile with pre-and-post fragile cover technology was cracked directly by the rocket jet flow, and the pre-fragile-cover was opened by the disturbance wave. Through configuring the pre-and-post fragile cover's opening condition reasonably, the launcher cover can open normally.