Aerodynamic numerical analysis of the three stage submunition separation scheme

DOI:	10.11809/bqzbgcxb2023.02.004
Keywords:	three stage separation; submunition; scheme design; separation condition; numerical simulation
Abstract:	A virtual model is used to conduct a three dimensional numerical simulation of the comprehensive three stage separation process of the fairing, outer baffle opening and lateral submissiles of a submunition. Some common problems and individual problems in the process of multistage separation are analyzed, and a numerical simulation is carried out for the multi body mutual movement and the flow field mutual interference of submissiles, the missile, fairings and outer baffles at the initial stage of separation. Considering the possible problems in the process of multistage separation, this paper designs a three stage separation scheme and studies three influencing factors, including separation attitude, initial separation velocity of each sub stage and baffle aerodynamic interference. The results show that a large separation attitude angle is not conducive to the stable flight of the submissiles after shooting, while an appropriate initial separation speed and existence of the baffle can optimize the separation stability. The three stage safe separation of the design model can be achieved by properly controlling the separation attitude, the initial separation velocity of each sub stage and the influence of the baffle.
Published:	2023-02-28
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