硼基粉末燃料预处理及热氧化特性分析  

Pre-treatment and thermal reaction characterization analysis of boron based powder fuel

作　　者：李超 张力锋 武冠杰 李悦 胡春波[1] LI Chao1,ZHANG Lifeng2 ,WU Guanjie1,LI Yue1, HU Chunbo1(1. Science and Technology on Combustion, Internal Flow and Thermal-structure Laboratory, Northwestern Polytechnical University,Xi＇ an 710072,China;2. 68128 Troops,People＇ s Liberation Army,Lanzhou 730046,China)

机构地区：[1]西北工业大学燃烧、流动与热结构国家重点实验室,西安710072 [2]中国人民解放军68128部队,兰州730046

出　　处：《固体火箭技术》2018年第5期537-542,548,共7页Journal of Solid Rocket Technology

基　　金：国家自然科学基金(51576166).

摘　　要：基于理论分析的方法,确定了硼基粉末燃料预处理材料的选择和用量,然后开展了硼基粉末燃料预处理实验,并对预处理所获得的硼基粉末燃料表面形貌等进行了分析。在此基础上,利用热重分析试验台,对改性硼基粉末燃料在空气气氛中的热氧化特性进行系统研究,分析了不同改性硼基粉末燃料的热反应特性。研究表明,相比传统液体和固体冲压发动机,硼基粉末燃料冲压发动机具有比冲和密度比冲的优势,且能在较大的空燃比范围内维持较高的燃烧室温度,有利于发动机的稳定工作。硼基粉末燃料中镁的加入,可有效降低粉末燃料的点火温度,并提高硼的氧化程度。Based on the theoretical analysis method, pre-treatment material and its quantify for powder fuel are defined. Then, pre-treatment experiment is conducted and the surface morphology of the boron based powder fuel is analyzed. Based on these, ther- mal reaction characterization of different boron based powder fuel samples in air atmosphere is investigated by TGA. The result shows that the boron based powder fuel ramjet has both specific impulse and density specific impulse advantages compared to the liquid and solid ramjet, and the powder fuel ramjet could maintain higher combustion chamber temperatures in a large range of air to fuel ratio, which will benefit the stable working process. Meanwhile, the TGA result indicate the addition of magnesium to the powder fuel will decrease the ignition temperature as well as improve oxidation degree.

关 键 词：粉末燃料冲压发动机 硼基粉末燃料 装填率 热氧化特性 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]