Research on the Influence of Missile Ejection on the Deployment Process of Folding Rudder

JIA Junkai; ZHANG Guangjun; YANG Haiyang; ZHONG Shan; LIU Guang

doi:10.15892/j.cnki.djzdxb.2025.02.011

Journal of Projectiles, Rockets, Missiles and Guidance >

2025 , Vol. 45 >Issue 2: 208 - 214

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.02.011

Research on the Influence of Missile Ejection on the Deployment Process of Folding Rudder

JIA Junkai ,
ZHANG Guangjun ,
YANG Haiyang ,
ZHONG Shan ,
LIU Guang

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Shanghai Electro-mechanical Engineering Institute, Shanghai 201109, China

Received date: 2025-02-20

Online published: 2025-05-15

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Abstract

In order to study the influence of the missile ejection condition in initial phaseon the deploying process of folding rudders, ADAMS is used to analyze the dynamic response of a torsion bar folding rudders without mechanical limit structure. The actual structural dynamic performance of the folding rudders is obtained through the observation of the folding rudders deploying test on the ground by mean of high-speed photography, and the model parameters of the dynamic simulation are modified according to the experimental results. Considering the impact of missile body attitude variations during aerial ejection on the folding rudders deploying process, the ejection force of the ejection device on the missile is measured by the ejection test on the ground, and CFD simulation is used to calculate the time-varying aerodynamic force experienced by the control surface of the rudders when they are deployed under the complex flow field of the plane belly, a dynamic deployment model for the rudders is established, which involving both ejection device force and aerodynamic resistance. The failure risks of folding rudders deployingt process are analyzed under multiple external folding rudder unlock time conditions and aerodynamic force deviations. Based on simulation results, a reasonable design range for external folding rudder unlock time is proposed. This work provides valuable reference for the engineering design and application of folding rudder.

Key words： folding rudder; ejection condition; dynamic simulation

Cite this article

JIA Junkai , ZHANG Guangjun , YANG Haiyang , ZHONG Shan , LIU Guang . Research on the Influence of Missile Ejection on the Deployment Process of Folding Rudder[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2025 , 45(2) : 208 -214 . DOI: 10.15892/j.cnki.djzdxb.2025.02.011

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