Study on the Influence of Missile Tail Flame on the Surface Flow Field of the Front Cover of the Surrounding Launch Tube

ZHAO Zhi; ZHU Rui; LYU Zhichao; WU Wei; WEN Xiongfei

doi:10.15892/j.cnki.djzdxb.2025.02.012

Journal of Projectiles, Rockets, Missiles and Guidance >

2025 , Vol. 45 >Issue 2: 215 - 222

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.02.012

Study on the Influence of Missile Tail Flame on the Surface Flow Field of the Front Cover of the Surrounding Launch Tube

ZHAO Zhi ,
ZHU Rui ,
LYU Zhichao ,
WU Wei ,
WEN Xiongfei

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Shanghai Space Propulsion Technology Research Institute, Shanghai 201109, China

Received date: 2024-09-26

Online published: 2025-05-15

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Abstract

A three-dimensional simulation model is established to investigate the impact of engine gas flow on the fragile front cover of surrounding launch tube during the process of a missile leaving its launch tube matrix. The dynamic grid method is used to simulate the motion of the missile body, and the transient flow field on the surface of the surrounding front cover is numerically simulated and calculated. By analyzing the gas streamline and flow field contours, the influence of the engine expansion and compression wave on the airflow direction and pressure distribution on the surface of the front cover during missile motion is obtained. Based on the changes in pressure difference between the inside and outside of the front cover at different times, combined with the safe range of pressure difference obtained from experiments, it assists in determining whether the front cover will rupture prematurely. By changing the distance between adjacent launch tubes, the magnitude of the change in pressure difference between the inside and outside of the front cover is calculated, and the safe distance between launch tubes is obtained. This provides simulation prediction and data support for the structural optimization design of the front cover and the arrangement scheme of multiple launch tube units.

Key words： wake field; front cover of launch tube; dynamic grid; numerical calculation

Cite this article

ZHAO Zhi , ZHU Rui , LYU Zhichao , WU Wei , WEN Xiongfei . Study on the Influence of Missile Tail Flame on the Surface Flow Field of the Front Cover of the Surrounding Launch Tube[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2025 , 45(2) : 215 -222 . DOI: 10.15892/j.cnki.djzdxb.2025.02.012

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