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Journal of Projectiles, Rockets, Missiles and Guidance >

2025 , Vol. 45 >Issue 4: 481 - 489

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.04.005

Rocket and missile launch technology

Investigating Impact Characteristics of the Rocket Gas Jet Impacting on the Launch Canister Front Cover

  • QIU Enxuan , 1 ,
  • GU Guangxin 2 ,
  • LE Guigao , 1 ,
  • SU Yifei 1
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  • 1 School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094,Jiangsu,China
  • 2 Xi'an Mordern Control Technology Research Institute,Xi'an 710065,Shaanxi,China

Received date: 2025-04-22

  Online published: 2025-09-22

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Abstract

To investigate the impact of rocket engine gas jet on front cover of a multi-launcher canister during a rocket launching process, a numerical simulation approach was adopted to analyze the flow field after the rocket exits the canister. A gas jet impingement model was established based on the 3D compressible Navier-Stokes equations, the Realizable k-ε turbulence model, and a second-order upwind total variation diminishing (TVD) discretization scheme. The results reveal that as the canister-out height of the rocket increase, the impingement effects on the canister initially intensify and then diminish. Key findings include: At 0.5 m out height, the front cover bears the lowest surface temperature and lowest pressure, with minimum impact loads. At 8 m height, the front cover bears the highest peak temperature of 1 375 K and highest maximum pressure of 195 kPa. At 10 m height, the impact load peaked at 20.21 kN, followed by a gradual reduction in temperature, pressure, and impact loads as the rocket ascended further. This study provides critical insights for safety design of launcher canisters and thermal protection strategies for launch systems.

Key words： front cover of launcher canister; gas jet; impact load; thermal protection

Cite this article

QIU Enxuan , GU Guangxin , LE Guigao , SU Yifei . Investigating Impact Characteristics of the Rocket Gas Jet Impacting on the Launch Canister Front Cover[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2025 , 45(4) : 481 -489 . DOI: 10.15892/j.cnki.djzdxb.2025.04.005

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