固体火箭技术2025，Vol.48Issue(5)：687-695,9.DOI:10.7673/j.issn.1006-2793.2025.05.006
横向过载下的翼柱形药柱固体发动机内弹道特性
Interior ballistic characteristics of solid rocket motor with finocyl grain under lateral overload
梁镕基 1雷建长 1池元成1
作者信息
- 1. 中国运载火箭技术研究院,北京 100076
- 折叠
摘要
Abstract
In order to study the effect of lateral overload on the interior ballistics and the exposure time of the insulation of a solid rocket motor,an improved method of face offsetting with high stability and efficiency was established for finocyl grain.The non-uniform burning surface regression,the interior ballistics and the exposure time were simulated under 0～50g lateral overload in dif-ferent directions.The results show that,under lateral overload,the internal ballistic changes of finocyl grain are similar to those of cone-hole grain.The pressure increases during the main working stage and decreases near the end.The exposure time of the insulation increases.The end of combustion is delayed;the wing slot feature causes the pressure to slowly decrease around 60 s relative to 0g overload.The interior ballistic and insulation exposure are affected by the lateral overload angle due to the wing slot feature.A typical high lateral overload flight environment of 10g leads to an increase of the average pressure by 1.1%during the working stage and a decrease by 11.1%near the end stage,the exposure time of insulation is also increased by 3.10 s.Therefore,the flight trajectory and internal ballistic errors caused by overload should be considered and thermal protection should be strengthened.关键词
固体火箭发动机/过载/内弹道/燃面退移Key words
solid rocket motor/overload/interior ballistics/burning surface regression分类
航空航天引用本文复制引用
梁镕基,雷建长,池元成..横向过载下的翼柱形药柱固体发动机内弹道特性[J].固体火箭技术,2025,48(5):687-695,9.
