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Global model of microwave plasma assisted N2O dissociation for monopropellant propulsion

机译:全局微波等离子体辅助N2O解离对单普利式推进的辅助N2O解离

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摘要

A global numerical model is developed to study the capability of a Microwave Electro-thermal thruster (MET) to operate with Nitrous Oxide gas (N2O), for spacecraft monopropellant thruster applications. N2O is a "green" propellant with interesting properties but highly inert when used as monopropellant; the non-equilibrium activation effect of the plasma is able to promote combustion of the gas. The model is self-consistent and features different temperatures for the vibrational modes of the mixture in order to account for possible vibrational activation effects of the plasma; a detailed kinetic scheme is presented, comprising rates for vibrational energy exchanges between the modes. The model shows that good theoretical efficiencies can be achieved by operating the MET with N2O, with thrust to power ratios up to 1 mN/W and specific impulse up to 200 s. The main channels of plasma assisted dissociation are examined, and the role of vibrational non-equilibrium is addressed. Published under license by AIP Publishing.
机译:开发了全局数值模型,以研究微波电热推进器(MOT)与氧化亚氧化物气体(N2O)操作的能力,用于航天器单普利特推进器应用。 N2O是一种“绿色”推进剂,具有有趣的特性,但用作单普勒的惰性感应;等离子体的非平衡活化效果能够促进气体的燃烧。该模型是自我支撑的,并为混合物的振动模式具有不同的温度,以便考虑等离子体可能的振动活化效应;提出了一种详细的动力学方案,包括用于模式之间的振动能量交换的速率。该模型表明,通过使用N2O的相遇,可以将良好的理论效率达到高达1ml / W的功率比,并且特异性脉冲高达200秒。检查血浆辅助解离的主要通道,并解决了振动非平衡的作用。通过AIP发布在许可证下发布。

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