固体火箭技术Issue(1)：55-60,6.DOI:10.7673/j.issn.1006-2793.2015.01.010
嵌金属丝推进剂燃烧起始阶段增速特性研究
Acceleration effect on initial stage of burning rate of grain with embedded metal wires
摘要
Abstract
The paper takes a variety of factors during the functioning period of a solid rocket motor that uses grain with embed⁃ded wire into consideration in the establishment of a system of equations that describes the governing equations for the metal wire, the rocket grain and the gas. The equations were solved numerically to obtain the detailed change of the embedded wire over time during the initial stage of propellant combustion,and the acceleration stage. The results indicate that properties such as thermal dif⁃fusivity,melting point,diameter and blackness of the wire all affect the acceleration effect of the wire differently. Metals with rela⁃tively low melting point may produce a slight pressure peak during the initial formation of the internal ballistic curve. Previous re⁃search has shown that the propellants with slow burning rate and relatively low ignition temperature are more sensitive to the embed⁃ded wire. The calculations of the presented numerical method are simple,reliable,and suitable for engineering applications.关键词
固体火箭发动机/药柱/嵌金属丝/燃速/数值仿真Key words
solid rocket motor/grain/embedded metal wires/burning rate/numerical simulation分类
航空航天引用本文复制引用
魏然,鲍福廷,刘旸..嵌金属丝推进剂燃烧起始阶段增速特性研究[J].固体火箭技术,2015,(1):55-60,6.基金项目
国家自然科学基金（51005179）。 （）
