含铝过氧化氢凝胶推进剂的点火过程  

Ignition Process of Aluminized Hydrogen Peroxide Gel Propellant

作　　者：宋培荣 孙得川 SONG Pei-rong;SUN De-chuan(School of Mechanics and Aerospace Engineering,Dalian University of Technology,Dalian Liaoning 116024,China;State Key Laboratory of Structural Analysis,Optimization and CAE Software for Industrial Equipment,Dalian University of Technology,Dalian Liaoning 116024,China)

机构地区：[1]大连理工大学力学与航空航天学院,辽宁大连116024 [2]大连理工大学工业装备结构分析优化与CAE软件全国重点实验室,辽宁大连116024

出　　处：《火炸药学报》2024年第12期1155-1162,I0004,共9页Chinese Journal of Explosives & Propellants

摘　　要：为探索含铝过氧化氢凝胶在火箭发动机中的点火可行性,开展了含铝过氧化氢凝胶的点火过程研究。通过点火试验确定其点火方式,根据理论分析构建了含铝过氧化氢凝胶推进剂的点火模型,提出了该推进剂的点火延迟时间计算方法,探究了点火延迟时间的影响因素,并对推进剂的点火延迟时间进行了预测。结果表明,火焰点火是可行的点火方式;液滴直径、铝颗粒直径、环境温度、铝含量及过氧化氢质量分数均对点火延迟时间有一定影响,其中液滴直径和铝颗粒直径对其影响最为显著;点火延迟时间与液滴、铝颗粒直径成正比,经过雾化后的液滴直径在0.5 mm以下、铝颗粒直径小于10μm的推进剂,适用于火箭发动机。In order to explore the ignition feasibility of aluminum-containing hydrogen peroxide gel in engines,the ignition process of aluminum-containing hydrogen peroxide gel was carried out.The ignition method was determined through ignition tests,the ignition model of the aluminum-containing hydrogen peroxide gel propellant was constructed based on theoretical analysis,and a method for calculating the ignition delay time of the propellant was proposed.The influencing factors of the ignition delay time were explored,and the propellant ignition delay time was predicted.The results show that the flame ignition is a feasible ignition method.The liquid droplet diameter,aluminum particle diameter,ambient temperature,aluminum content and hydrogen peroxide concentration have a certain impact on the ignition delay time,among which the diameter of droplet and aluminum particles have the most significant impact.The ignition delay time is proportional to the diameter of the liquid droplets and aluminum particles.Propellants with atomized droplet diameters below 0.5 mm and aluminum particle diameters less than 10μm are suitable for rocket engines.

关 键 词：物理化学 铝颗粒 过氧化氢 凝胶推进剂 点火延迟时间 点火模型 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O64[理学—物理化学]