拉高机头保持水平直线飞行。
继续保持水平直线飞行。
给出了机载观测平台水平直线飞行且无飞行姿态变化条件下的定位表达式。
Some locating expressions are given when the observer is flying along a horizontal beeline without any posture change.
待直升机垂直俯冲的距离与垂直爬升的距离相同时，拉起机头恢复成水平直线飞行。
The helicopter is allowed to fall the same distance that it climbed at the beginning of the maneuver before pulling the helicopter back to straight and level flight.
待直升机垂直俯冲的距离与垂直爬升的距离相同时，拉起机头恢复成水平直线飞行。
The helicopter is allowed to fall the same distance that it climbed at the beginning of the maneuver before pulling the helicopter back to straight and level flight.
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