复合固体推进剂混合工艺参数推算方法  

Calculation method for mixing process parameters of composite solid propellant

作　　者：赵越宸 庞维强[2] 苏昌银 龙杰才 郑荣耀 李锡文[1] ZHAO Yuechen;PANG Weiqiang;SU Changyin;LONG Jiecai;ZHENG Rongyao;LI Xiwen(Huazhong University of Science and Technology,Wuhan 430074,China;Xi'an Modern Chemistry Research Institute,Xi'an 710061,China;Xi'an Aerospace Chemical Propulsion Co.Ltd.,Xi'an 710025,China;Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]华中科技大学,武汉430074 [2]西安近代化学研究所,西安710061 [3]西安航天化学动力有限公司,西安710025 [4]广东工业大学,广州510006

出　　处：《固体火箭技术》2024年第6期851-858,共8页Journal of Solid Rocket Technology

摘　　要：固体推进剂的混合工艺目前主要依赖经验,缺乏结合混合系统力学特性与含能材料点火机理的安全性评估。从含能材料的摩擦诱导点火理论出发,参考分解反应机理,提出了一种基于摩擦点火模型的混合过程安全性评估方法,建立计算模型,并仿真研究摩擦生热过程对点火时间的影响;确定了摩擦能的计算方法,结合混合机的结构参数与工艺参数推导并建立混合摩擦能与混合机桨叶转速的计算公式,将摩擦能作为混合过程安全性的评价指标;利用中型混合机的实际生产数据,计算了相应混合工艺的摩擦能,并使用某型号混合机爆炸过程的数据进行校核;最后,使用中型混合机的摩擦能推导大型混合机的工艺参数,开展了大型混合机工艺参数的可靠性验证实验。结果表明:通过摩擦能公式推导的扭矩值均小于安全扭矩值2521.91 N·m;在不同负载情况下,实际检测的扭矩值均小于大型混合机的安全扭矩值11593.44 N·m,且大型混合机的实际摩擦能与中型混合机的摩擦能接近,最大摩擦能为2089.06 W/m^(2),验证了该工艺参数推算方法的可靠性;混合摩擦能推算方法为推进剂安全高效的制定混合过程工艺参数与生产提供了新参考。At present,the mixing process of solid propellants mainly relies on experience,and lacks the safety assessment combining the mechanical properties of the mixing system with the ignition mechanism of energyrtic materials.According to the theory of friction-induced ignition of energy-containing materials and referring to the decomposition reaction mechanism,a safety assessment method of the mixing process based on the friction ignition model was proposed,and a computational model was established to simulate and study the influence of the friction heat-generating process on the ignition time.The calculation method of friction energy was determined,and the formula of mixing friction energy and mixer paddle speed was derived and established by combining the structural parameters and process parameters of the mixer,so that the friction energy was taken as an evaluation index of the safety of the mixing process.The friction energy of the corresponding mixing process was calculated by using the actual production data of medium-sized mixer,and the data of explosion process of a certain type of mixer was used for checking;finally,the friction energy of medium-sized mixer was used to derive the process parameters of large-scale mixer,and the reliability verification experiments of the process parameters of the large-scale mixer were carried out.The results show that:the torque values deduced from the friction energy formula are all less than the safe torque value of 2521.91 N·m.Under different load conditions,the actual torque values detected are all less than the safe torque value of 11593.44 N·m of the large mixer,and the actual friction energy of the large mixer is close to the friction energy of the medium-sized mixer.The maximum friction energy is 2089.06 W/m^(2),which verifies the reliability of the process parameter derivation method.The mixing friction energy calculation method provides a new reference for the safe and efficient formulation of mixing process parameters and production of propellants.

关 键 词：混合摩擦能 混合工艺 扭矩安全值 固体推进剂 含能材料 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]