摘要
为研究HTPB推进剂的"脱湿"性能,基于气体膨胀计原理研制了复合固体推进剂"脱湿"性能测试装置,并采用该装置开展了配方及应变率对推进剂"脱湿"性能影响的试验研究。采用起始"脱湿"点、特征"脱湿"点和特征"脱湿"速率来表征推进剂的"脱湿"性能,试验结果表明,推进剂的"脱湿"性能具有明显的率相关性,应变率越高,推进剂的起始"脱湿"点和特征"脱湿"点越小,特征"脱湿"速率越大,但是推进剂的内部"脱湿"速率存在一个上限;HTPB推进剂中AP含量对推进剂"脱湿"性能的影响占主导地位,AP含量越高,则推进剂的起始"脱湿"点和特征"脱湿"点越小,特征"脱湿"速率越大。所建立的试验方法和"脱湿"性能表征方法对药柱结构完整性、药柱力学性能预示及可靠性评估均具有重要实用意义。
In order to study the dewetting performance of HTPB propellant, a device for testing propellant dewetting performance was developed based on the principle of gas dilatometer, and the test of the influence of formulation and strain rate on the dewetting performance of the propellant was carried out by using the device. The initial dewetting point, characteristic dewetting point and characteristic dewetting rate were used to characterize the dewetting performance of propellant. The test results show that the dewetting performance of propellant has obvious rate correlation, the higher the strain rate is, the smaller the initial dewetting point and characteristic dewetting point of propellant are, and the higher the characteristic dewetting rate is, but there is an upper limit on the internal dewetting rate of the propellant;the effect of AP content on the dewetting performance of HTPB propellant is dominant,and the higher AP content is, the smaller the initial dewetting point and characteristic dewetting point are and the higher the characteristic dewetting rate is. The established test method and dewetting performance characterization method are of important practical significance for structural integrity, mechanical property prediction and reliability evaluation of the grain.
作者
张镇国
张宏亮
侯晓
阎涛
郜婕
ZHANG Zhenguo;ZHANG Hongliang;HOU Xiao;YAN Tao;GAO Jie(The 41st Institute of the Fourth Academy of CASC,National Key Laboratory of Combustion,Flow and Thermo-structure,Xi’an 710025,China;The 8th Military Representative Office of Air Force Equipment Department in Xi’an,Xi’an 710025,China;The 44st Institute of the Fourth Academy of CASC,Xi’an 710025,China)
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2020年第3期265-270,共6页
Journal of Solid Rocket Technology
