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This study addresses the safety and attitude stability issues associated with the separation of internal loads from missile warheads under tractor parachute drag by employing a dynamic nested mesh method combined with a penalty function to numerically simulate the separation process, accounting for collisions between the load and the adapter within the warhead. In contrast to previous studies, this method shifts the aerodynamic computation during the separation process from steady-state to transient computation, and the collision calculation from characteristic point estimation to precise node-surface computation, achieving a coupled solution of the unsteady flow field and multi-body collisions with enhanced fidelity. Firstly, the calculation method employed in this study is introduced in detail. Subsequently, a simulation model of the separation process was developed, and the flow field and motion characteristics of the missile warhead, internal load, and tractor parachute during separation were analyzed. The research method employed in this study provides novel insights for the engineering development of air separation systems.

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Study on the Separation Process of Missile Warhead and Internal Load Based on Dynamic Nested Grid

  • 会议论文

  • 发表日期：

    2026年

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  • Chaoqun Chen,
  • Mingbo Tong,
  • Jichang Chen,
  • Fei Duan

摘要

This study addresses the safety and attitude stability issues associated with the separation of internal loads from missile warheads under tractor parachute drag by employing a dynamic nested mesh method combined with a penalty function to numerically simulate the separation process, accounting for collisions between the load and the adapter within the warhead. In contrast to previous studies, this method shifts the aerodynamic computation during the separation process from steady-state to transient computation, and the collision calculation from characteristic point estimation to precise node-surface computation, achieving a coupled solution of the unsteady flow field and multi-body collisions with enhanced fidelity. Firstly, the calculation method employed in this study is introduced in detail. Subsequently, a simulation model of the separation process was developed, and the flow field and motion characteristics of the missile warhead, internal load, and tractor parachute during separation were analyzed. The research method employed in this study provides novel insights for the engineering development of air separation systems.