Bomb Rear Flow Field Numerical Simulation and Flexible Cabin Opening Reliability Analysis

By analyzing the motion of the spring guided umbrella in dynamic conditions it is found that the flow field in the rear of bomb is very complicated. The pressure field, velocity field and vortex in the rear of bomb are obtained with the help of numerical modeling and simulation. Based on the principle of hydrodynamics and conservation of energy, a simulation model of the spring guided umbrella is established and the reliability criterion of flexible cabin opening is obtained.