系统中飞轮是姿态控制的执行机构，同时也是储能装置。

The flywheels are used as attitude control actuators as well as energy storage device.

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分析认为PPT是一种先进的小推力动力装置，特别适合于微小卫星的轨道转移、姿态控制、位置保持以及星座编队飞行。

It was showed that PPT was a kind of advanced propeller with small thrust, which was suitable to orbit transfer, attitude control, station keeping and formation flying for small and micro satellite.

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动量轮是空间载荷姿态控制必不可少的装置。

Momentum wheel is absolutely necessary for space load.

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