Airdrop Landing Rocket Dynamics Simulation in Multiple Rocket Storage-Transportation Box

Traditional land transportation methods are inadequate for coping with the complex terrains encountered during operations. Consequently, the airdrop supply of equipment has been playing an important role in the effective execution of such operations. A geometric model and finite element model of the storage and transportation box-loading platform-airbag landing buffer were established based on the control volume method (CV). Discrete beam element is used in constraint modelling of airdrop equipment. An accurate finite element model of airdrop with binding constraints is established. According to the actual mechanical parameters, the finite element material parameters such as buffer air bag, honeycomb plate and binding rope are accurately described. The simulation conditions are designed according to the requirements of the airdrop test outline, and the impact load of the rocket projectile under the concrete ground condition and the maximum locking force of the directional pipe are calculated, which has a guiding role in the selection of rocket projectile materials and the expansion of the airdrop test.