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- variable specific impulse rocket 变比冲发动机
- Fuel-optimal coplanar orbital transfer using the advanced variable specific impulse magnetoplasma rocket (VASIMR) is studied.Thrust direction and specific impulse are considered as control variables. 摘要以国外目前正在研制中的变比冲磁等离子体火箭发动机(VASIMR)为背景，研究了变比冲发动机作用下的同平面燃料最优轨道转移。
- Principle and research progress of variable specific impulse magnetoplasma rocket 可变比冲磁等离子体火箭原理与研究进展
- variable specific impulse 变比冲
- Curves of constant specific impulse are traced inside the triangle. 比冲为常数的曲线则画在三角形内部。
- Although methane's specific impulse lags that of hydrogen, it presents some advantages. 虽然甲烷的比冲量没有氢那麽高，但它有好几项优点。
- It is a reliable measuring method of the specific impulse for the high-burning rate propellants. 为高燃速推进剂比冲测试提供了可靠的试验依据。
- Arcjet, one type of electric propulsion, is high at specific impulse and ratio of thrust, and good in capability of propellant. 电弧加热发动机就是电推进的一种,它具有较高的比冲和推力/功率比以及良好的推进剂普适性,已成为国际研究和应用的重点。
- In particular, the fuel exhibits a higher specific impulse, a measure of fuel efficiency that describes how much momentum a given weight of propellant can impart. 特别值得一提的是，甲烷的比冲量较高，这个燃料效率值代表特定重量的推进燃料所能产生的动量。
- The investigation shows that plenum chamber total pressure has multifarious effects on arcjet thruster operation, and both specific impulse and thrust efficiency can be improved by increasing it befittingly under steady arc. 研究表明，集气腔总压对推力器工作过程具有多方面的影响，在保证电弧稳定的情况下，适当提高集气腔总压可同时提高比冲和推进效率。
- The main performance parameters of a fixed geometry scramjet are observed,and the effective thrust coefficient,effective specific impulse and effective specific thrust are determined. 探讨了固定几何尺寸（不可调）的超燃冲压发动机有效推力系数、有效比冲和有效单位推力等主要性能参数变化的定量范围。
- The specific impulse of an open-cycle gas generator engine such as Vulcain is inherently limited, while for the closed-cycle, staged-combustion design, it increases with the combustion pressure. 一个火箭引擎的总体效率由其特定推力来衡量，推力（动力改变-或单摆，发动机速度提升）能完成燃料的每个单元燃料（的燃烧）。
- A stateful command maintains the internal state of its data and variables specific to each individual use. 有状态command维护它数据的内部状态和特定于每次独立使用的变量。
- Though the bleed can enlarge the thrust of the aerospike nozzle, it lessens the specific impulse except the case that the bleed is small at low flight altitude for the linear aerospike nozzle. 加入二次流会使塞式喷管的推力上升，但在大多数情况下其比冲会下降，只有特定压强比条件下，加入少量的二次流比冲才会上升。
- The scramjet has some advantages of high flow velocity, high specific impulse and wide operating range which become a viewpoint in the research field of power of Aeronautics and Astronautics. 超燃冲压发动机以其高速、高比冲和工作范围宽广的特点,正逐渐成为当今航空航天动力领域的研究焦点。
- For blast warhead, lethality criterion with distance as judge index is given in terms of standard formula of kill law of air shock, over pressure formula and specific impulse formula. 针对爆破战斗部，根据空气冲击波的标准杀伤规律公式和超压以及比冲量公式，得出了以距离为判断指标的毁伤判据。
- A constant, variable, function name, or expression. 一种常数、变量、函数名或表达式。
- The prices are variable, shop around by all means. 价格高低不一，所以一定要货比三家逐店选购。
- The temperature was a variable in the experiment. 在该实验中温度是个变量。
- A finite increment in a variable. 变量增量变量的有限增量
