摘要
慢速烤燃试验是固体火箭发动机低易损性评估试验考核的重点之一。为研究丁羟复合固体推进剂发动机尺寸对慢速烤燃特性的影响规律,采用慢速烤燃试验结合数值模拟,对比分析了Ф100 mm×200 mm、Ф160 mm×400 mm中小型试验件和Ф522 mm×887 mm大尺寸固体火箭发动机慢速烤燃点火增长规律,确定了点火温度、点火区域及响应等级。结果表明:Ф100 mm×200 mm,Ф160 mm×400 mm及Ф522 mm×887 mm 3种试验件的试验点火温度分别为244,172,155℃;以试验数据作为输入,计算点火温度分别为250,269,154℃,计算误差分别为2.88%,1.17%,0.64%,响应等级分别为爆炸、爆炸、爆燃;计算云图表明,中小型试验件的点火位置位于圆柱体中心,大尺寸固体火箭发动机的点火位置位于固体推进剂前端肉厚的中心位置,为一环状区域。
Slow cook-off test is one of the key tests of low vulnerability assessment for solid rocket motor. In order to study the influence of the charge size of HTPB composite propellant on the slow cook-off characteristics,slow cook-off tests and numerical simulation were carried out to compare and analyze the ignition growth laws of solid rocket motor under slow cook-off tests,with charge dimensions of Φ100 mm × 200 mm,Φ160 mm × 400 mm and Φ522 mm × 887 mm. Their corresponding ignition temperatures,ignition positions and response levels were determined. Results show that the ignition temperature of specimens ofФ100 mm×200 mm,Ф160 mm×400 mm and Ф522 mm×887 mm of solid rocket motors are 244 ℃,172 ℃ and 155 ℃,respectively. Taking test data as inputs,the calculated ignition temperature is 250,269,154℃,and their corresponding calculation errors and response levelsare 2.88%,1.17%,0.64%,and explosion,explosion and deflagration. The calculated cloud diagram shows that the ignition position of medium and small test pieces is located in the center of charge cylinders,and the ignition position of full-scale solid motor is in the center of meat thickness of solid propellant front-end,which is a ring shape area.
作者
邓玉成
李军
任慧
焦清介
DENG Yu-cheng;LI Jun;REN Hui;JIAO Qing-jie(State Key Laboratory of Explosive Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Science and Technology on Aerospace Chemical Power Laboratory,Xiangyang 441003,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2022年第2期155-162,共8页
Chinese Journal of Energetic Materials
基金
国家自然科学基金资助(21975024)。
关键词
固体火箭发动机
丁羟复合固体推进剂
慢速烤燃
点火温度
响应特性
solid rocket motor
HTPB composite propellant
slow cook-off
ignition temperature
response characteristic
