Study on the Launch Separation Flow and Collision Coupling Model Based on Virtual Contact

XIE Junhu; ZHANG Yuying; XIONG Wenjing; FU Debin

doi:10.15892/j.cnki.djzdxb.2025.01.009

Journal of Projectiles, Rockets, Missiles and Guidance >

2025 , Vol. 45 >Issue 1: 69 - 74

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.01.009

Study on the Launch Separation Flow and Collision Coupling Model Based on Virtual Contact

XIE Junhu ^,¹^,² ,
ZHANG Yuying ³ ,
XIONG Wenjing ⁴ ,
FU Debin ⁵

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¹ China Airborne Missile Academy, Luoyang 471009,Henan,China
² National Key Laboratory of Air-based Information Perception and Fusion, Luoyang 471009, Henan,China
³ The First Military Representative office of Air Force Equipment Department in Luoyang,Luoyang 471009, Henan,China
⁴ China National Aero-technology Import Export & Corporation,Beijing 100176,China
⁵ School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081,China

Received date: 2024-06-07

Online published: 2025-03-12

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Abstract

The aerodynamic loads, multi-body motion, and contact collisions involved in the separation process of rocket and missile launches are key factors affecting the reliability of launch separation. To adopt numerical methods for analyzing such coupled states of flow and motion, an in-depth study is conducted on the launch separation flow and collision coupling model based on a virtual contact approach. The coupling model starts from a transient flow field numerical model, that is introduced a dynamics model concerning the six degrees of freedom (6-DOF) multi-body motion, subsequently, a contact dynamics model characterized by virtual contact is used to examine the multi-body contact collision loads to obtain the coupled states of object motion and flow under various loads. The analysis of application examples shows that the virtual contact method can effectively simulate the coupled state of flow, motion, and collision during launch separation and the method can provide a reference for similar analyses.

Key words： launch and separation; transient flow; multi-body motion; virtual contact; numerical simulation

Cite this article

XIE Junhu , ZHANG Yuying , XIONG Wenjing , FU Debin . Study on the Launch Separation Flow and Collision Coupling Model Based on Virtual Contact[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2025 , 45(1) : 69 -74 . DOI: 10.15892/j.cnki.djzdxb.2025.01.009

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