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弹箭与制导学报 >

2025 , Vol. 45 >Issue 6: 1177 - 1182

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.06.027

学术文章

固体火箭缩比发动机的设计方法研究

  • 刘解见 ,
  • 邬潇洋 ,
  • 张鑫乐 ,
  • 郜益磊 ,
  • 严思雨 ,
  • 张赋 ,
  • 呼和都乐 ,
  • 郭若
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  • 中国航天科工六院41所,内蒙古 呼和浩特 010010

刘解见(1986—),男,高级工程师,博士研究生。E-mail:。

收稿日期: 2025-01-07

  网络出版日期: 2026-01-24

基金资助

国防科工局稳定支持项目

收起

Research on Design Method of Solid Scaled Analog Rocket Motor

  • LIU Jiejian ,
  • WU Xiaoyang ,
  • ZHANG Xinle ,
  • GAO Yilei ,
  • YAN Siyu ,
  • ZHANG Fu ,
  • HUHE Dule ,
  • GUO Ruo
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  • The 41th Institute of Sixth Academy of CASIC,Hohhot 010010,Inner Mongolia,China

Received date: 2025-01-07

  Online published: 2026-01-24

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摘要

以某固体火箭发动机为原型,通过相似第二定理中的量纲分析法,得到了固体火箭发动机的等效缩比设计方法和准则。结合有限元数值仿真计算,对比计算和分析了原型发动机和缩比发动机在点火建压载荷下药柱的应力应变响应。并结合零维内弹道控制方程,计算了两者的工作压强和工作时间的关系。计算结果表明,缩比发动机能够以较高的精度复现原型发动机药柱在点火建压载荷作用下的结构完整性;同时,两者的内弹道性能也表现出基本一致的特征。验证了相似理论在固体火箭缩比发动机设计中的可行性和正确性,能够指导后续大型固体火箭发动机缩比模型的设计。

关键词： 固体火箭发动机; 相似原理; 缩比准则; 药柱完整性

本文引用格式

刘解见 , 邬潇洋 , 张鑫乐 , 郜益磊 , 严思雨 , 张赋 , 呼和都乐 , 郭若 . 固体火箭缩比发动机的设计方法研究[J]. 弹箭与制导学报, 2025 , 45(6) : 1177 -1182 . DOI: 10.15892/j.cnki.djzdxb.2025.06.027

Abstract

The scaled solid rocket engine plays a crucial role and holds significant meaning.Firstly,it allows for cost-effective experimental investigations.By reducing the size,the cost of materials,manufacturing,and testing is much lower compared to full-scale engines.This enables researchers to conduct a large number of tests to study various parameters such as combustion efficiency,thrust characteristics,and material performance under different conditions.Secondly,it helps in understanding the fundamental physical processes involved in the operation of a solid rocket engine.The scaled model can provide valuable insights into the flow patterns,heat transfer,and chemical reactions within the engine,which are essential for optimizing the design and performance of the full-scale version.In this paper,based on the second similarity theory,a new approach on the solid scalded rocket design through dimensional analysis has been proposed.The structural response behaviors of the full-scale motor and the scaled motor under the ignition pressurization load have been demonstrated.At the same time,the pressures along with the burning time during the whole working period have both been calculated by employing the zero-dimensional interior ballistic governing equations.The results bear out that both the structural response and interior ballistic performances are highly similar to each other,which proves that the design method propose in this paper is reasonable and credible.

Key words： Solid motor rocket; Similarity theory; Scaled principle; Grain structural integrity

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