propulsion efficiency

A Hall thruster, with its high-efficiency and high specific impulse, is one of the most important electric propulsion devices widely used for spacecraft propulsion such as attitude control, orbital transfer and deep space exploration missions in the future.

霍尔推力器作为一种等离子体装置，以其高效率高比冲等特点成为国际电推进领域的研究热点，广泛应用在姿态控制，轨道转移及将来的深空探测任务。

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Pump jet propulsor ( PJP), which was developed in the past several years, is a new propulsor with high propulsion efficiency, high critical velocity and low radiated noise.

泵喷推进器是近年来发展起来的一种推进器，具有推进效率高，辐射噪声低，临界航速高的优点。

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AC power propulsion systems have the requirements of high efficiency, low harmonics and noise.

交流电力推进系统的设计需满足高效率 、 低谐波和低噪声的要求.

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These will decrease the propulsion efficiency and increase fuel consumption.

船舶污底引起阻力增加,降低了船舶的推进效率,增加了耗油量.

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The influence of fuel grain length and port diameter, oxidizer mass flux and nozzle throat diameter on the combustion efficiency and propulsion performance was then analyzed in further tests to optimize these parameters.

利用试验数据分析了燃料药柱几何尺寸、氧化剂质量速度和发动机喷嘴喉径对燃烧效率及推进性能的影响，探讨了这种发动机的优化设计范围。

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