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Journal of Projectiles, Rockets, Missiles and Guidance >

2011 , Vol. 31 >Issue 6: 146 - 148

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2011.06.027

ROCKETS TECHNOLOGY

The Study on the Effect of Flow and Stress Change Caused by Pintle Assembly Deviation

  • LU Mingzhang ,
  • ZHANG Shengmin ,
  • ZHOU Zhanfeng ,
  • HE Guoqiang
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  • National Key Laboratory of Combustion, Flow and Thermo-structure, Northwestern Polytechnical University, Xi'an 710072, China

Received date: 2010-12-20

  Online published: 2025-05-30

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Abstract

A numerical analysis was performed to study the effect of flow and stress change caused by pintle assembly deviation, providing flow details argumentation for pintle ablation and disjunction observed in experiment. The results obtained are as follow: (i) the stress along radial direction grow with increase of translation deviation; (ii) the effect of radial deviation can be neglected when it's less than 2°; when it is between 2°~4°, the effect needs to be considered; when it is more than 4°, eccentricity occurs in pintle motor, where the performance is severely jeopardized.

Key words： thrust control; solid rocket motor; pintle; numerical simulation

Cite this article

LU Mingzhang , ZHANG Shengmin , ZHOU Zhanfeng , HE Guoqiang . The Study on the Effect of Flow and Stress Change Caused by Pintle Assembly Deviation[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2011 , 31(6) : 146 -148 . DOI: 10.15892/j.cnki.djzdxb.2011.06.027

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