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1. 南京理工大学 化学与化工学院, 江苏 南京 210094
2. 南京理工大学 空间推进技术研究所, 江苏 南京 210094
3. 微纳含能器件工业和信息化部重点实验室, 江苏 南京 210094
Received:22 July 2024,
Published Online:12 August 2025,
Published:31 July 2025
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Chuntian LI, Zhidong WANG, Lian LI, et al. Study of Rheological Properties and Factors Influencing the Ignition and Combustion Characteristics of HAN-based Electrically Controlled Gel Propellant[J]. Acta Armamentarii, 2025, 46(7): 240609.
Chuntian LI, Zhidong WANG, Lian LI, et al. Study of Rheological Properties and Factors Influencing the Ignition and Combustion Characteristics of HAN-based Electrically Controlled Gel Propellant[J]. Acta Armamentarii, 2025, 46(7): 240609. DOI: 10.12382/bgxb.2024.0609.
Gel propellant has the advantages of controllable combustion
easy to storage and good safety
which has potential application prospects in space micro-propulsion technology.Thus
in order to effectively improve the pipeline transportation efficiency of gel propellant and study the factors affecting its ignition and combustion characteristics
the rheological properties and the ignition and combustion characteristics of hydroxylamine nitrate (HAN)-based electronically controlled gel propellant are experimentally studied by using a rotary rheometer and an electro-chemical combustion diagnostic system.The results show that the viscosity of gel propellant can be dramatically declined by increasing the shear force and rising the temperature.When the gel propellant is subjected to a significant shear force
its loss modulus is more dominant than the storage modulus under external shear
and it begins to change from a solid to a fluid.The viscosity of gel propellant will increase rapidly when the external shear action disappears
which highlights the solid properties.In this experiment
the most suitable electrode material for HAN-based electrically controlled gel propellant is Mo electrode
which has the lowest ignition delaytime of 0.3s and the fastest volumetric burning rate of 0.21mL/s at 250V (25℃).On the other hand
the temperature has a significant effect on the ignition delay of gel propellant.The ignition delaytime of gel propellant decreases from 5.3s to 1.5s with the rise on temperature at 175V.But the temperature has no obvious effect on the volumetric burning rate.Combining with R-type thermocouple
the flame temperature distribution of gel propellant measured based on the thermocouple temperature measurement technology is in the range of 1200-1400K.
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吕少一 , 邵自强 , 赵明 , 等 . 基于硝基甲烷的两类凝胶推进剂流变性能研究 [J ] . 兵工学报 , 2013 , 34 ( 2 ): 181 - 188 . DOI: 10.3969/j.issn.1000-1093.2013.02.009 http://doi.org/10.3969/j.issn.1000-1093.2013.02.009 分别制备了以气相二氧化硅(SiO2)和羧甲基纤维素硝酸酯(CMCN)为胶凝剂的硝基甲烷(NM)凝胶推进剂,研究了两类凝胶的形成机理及胶凝剂类型对凝胶体系流变性的影响规律。采用线性的流变学方法研究了凝胶体系的屈服性、触变性、蠕变性与温敏性等动态粘弹性,分别利用PowerLaw模型、HerschelBulkley模型、Burger模型对凝胶的流动曲线、蠕变曲线进行了数据拟合。研究发现,NM/SiO2凝胶是SiO2粒子间通过氢键形成的小分子聚集体团聚而成堆积型网路结构凝胶,而NM/CMCN凝胶是由CMCN大分子链上两亲性基团与有机小分子基团间通过分子链间疏水键、氢键等非共价键相互作用形成的一种交联网络型凝胶。两类凝胶的非牛顿系数n&le;0.60. 与NM/CMCN凝胶相比,NM/SiO2凝胶具有较高的屈服应力、剪切稀化性和弹性柔量与弹性响应性,具有较差的触变恢复性和较小的内耗,且其凝胶强度在高温与低温下反而有一定的增强。
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