Based on laser propulsion thrust vector control, a thrice reflecting focus system is put forward, designed and fabricated.

基于激光推进推力矢量控制，提出、设计并加工了一种三次反射激光聚焦系统。

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The aircraft’s shaft-driven lift fan propulsion system produced more vertical thrust than needed to meet performance requirements.

经测试，飞机的轴驱动升力风扇推进系统可产生超过性能需求的垂直推力比。

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A pulse detonation rocket engine (PDRE) is a new propulsion system that generates thrust by using high-temperature and high-pressure air produced by pulse detonation waves.

脉冲爆震火箭发动机是一种利用脉冲式爆震波产生高温、高压燃气发出的冲量来产生推力的新型推进系统。

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This propulsion system produces exquisite levels of thrust by accelerating charged atoms of xenon through nozzles at the rear of the spacecraft.

BBC: Goce gravity mapper surfs atmosphere

Both propulsion systems produce only small amounts of thrust but are very efficient in terms of how much "propellant" they consume.

BBC: Strand-1 'phone-sat' ready for orbit