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在机弹分离的过程中,载机和航弹间会产生复杂的非定常气动干扰,特别是在分离初期,气动干扰会使航弹的气动力特性和飞行特性产生很大的变化,影响到安全分离,甚至可能会造成弹体与载机相撞的飞行事故。因此研究载机与航弹分离的非定常流场,分析航弹发射过程中机弹气动干扰力、分离过程中弹的气动特性及气动干扰机理是十分必要的。本文采用动网格技术和三维非定常数值模拟方法,对内埋式航弹与载机分离的非定常过程进行了数值模拟,研究了不同初始下抛速度对机弹分离的影响,分析了载机内埋弹舱和航弹之间的气动干扰及分离过程中航弹的空气动力特性。
During the separation of the projectile and missile, complicated unsteady aerodynamic interference will occur between the carrier and the missile, especially in the early stage of separation. The aerodynamic interference will greatly change the aerodynamic characteristics and flight characteristics of the missile. Safe separation, and may even cause the projectile and the aircraft collided with a flying accident. Therefore, it is very necessary to study the unsteady flow field of carrier-to-ship separation and to analyze the aerodynamic interference force of the projectile during its launch. The aerodynamic characteristics and the aerodynamic interference mechanism of the projectile in the separation process are necessary. In this paper, the unsteady process of the separation between embedded bomb and carrier aircraft is numerically simulated by moving grid technique and three-dimensional unsteady numerical simulation. The influence of different initial launching velocity on the separation of the projectiles and missiles is studied. The aerodynamic interference between the buried bomb and the bomb and the aerodynamic characteristics of the bomb during separation.