所有这些装置都能够帮助操作者保持良好的飞行位置。
All of these devices can help the operator maintain a good flight position.
我们已经注意到，它关系到滚转刚度和飞机保持两个机翼在水平位置飞行的趋势。
We have already noted its relation to roll stiffness and to the tendency of airplanes to fly with wings level.
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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