Use collective control to maintain constant altitude and speed. Fly away from the maneuver straight and level.
执行后退侧滚时，请控制主旋翼的螺距，以便维持固定的高度及速度。
2
Time the input of the cyclic& collective commands such that the helicopter maintains constant altitude, direction& speed.
安排副翼、降舵及主旋翼螺距的打舵时机，使得直升机能保持固定的高度、进方向及速度。
3
As the speed of urbanization is accelerating in China, the question of collective land property rights protection arising from agricultural land expropriation has become a hot topic.