鉴于化学燃料火箭浪费太多的推进剂难以实现飞船速度的静变化,电力推进器仅仅使用一小点推进剂就可以做同样的任务。
Whereas chemical rockets waste too much propellant to reach a net change in spacecraft velocity, electric thrusters can do exactly the same mission using just a small fraction of the propellant.
但是基于化学的推进系统被严重限制了,因为机器的质量的大部分用来给了推进剂,结果就是没怎么留下空间给装载量。
But chemical-based systems are severely limited by the fact that the vehicle mass must be made mostly of propellant, which leaves little room for the payload.
电推进系统具有比化学推进器最少高一个数量级的比冲,所以采用电推进系统可以大量减少推进剂质量。
Electric propulsion system offers specific impulse at least an order of magnitude higher than those of chemical thrusters, so propellant masses can be reduced by the same factor.
化学推进剂被装在工具内,工具用钢丝绳下入井内。
The chemical propellant is packed inside the tool which is lowered on wireline.
贫氧推进剂一次燃烧的物理和化学动力学因素决定了其一次燃烧为非平衡燃烧。
The primary combustion of deficient oxygen solid propellant is non equilibrium because of its own physical and chemical processes.
制造商部分:马口铁和铝容器,阀门,香水,化学活性剂,设备,推进剂气体,垫圈,帽子,和其他物品。
Manufacturers of parts: tin plate and aluminum containers, valves, fragrances, chemical active agents, equipments, propellant gases, gaskets, caps, and other items.
同时,从基本模型出发,讨论了影响推进剂燃速压力指数的化学结构因素。
In the meantime, based on the basic model, the chemical structure factors which influence the pressure index are discussed.
基于凝相机理与热解实验,从分子层面和化学反应的角度,结合价键、形式电荷、链反应等理论和固体单元推进剂的燃烧状况,提出了AP与HMX间的“连锁互动”机制。
Related to bond polarity, formal charges on atoms, chain reaction theory and the comparison of solid monopropellant combustion and modeling, the "linkage mutualism"mechanism was proposed.
基于凝相机理与热解实验,从分子层面和化学反应的角度,结合价键、形式电荷、链反应等理论和固体单元推进剂的燃烧状况,提出了AP与HMX间的“连锁互动”机制。
Related to bond polarity, formal charges on atoms, chain reaction theory and the comparison of solid monopropellant combustion and modeling, the "linkage mutualism"mechanism was proposed.
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