rotation begins in order to achieve a speed of V2 at 35    在該速度下飛機抬輪開始以便在跑道上空35英尺時達

feet above the runway.                                   到V2速度。

VREF The reference speed at the 50 foot height in a      VREF，

normal landing. This speed is generally equal to 1.3       飛機正常著陸時，高度50英尺時的基準速度。通常是飛

times the stall speed in the landing configuration.      機在著陸形態時的失速速度的1．3倍。

VTK, SEE - VERTICAL TRACK                                垂直航跡，

                                                           見Vertical Track．

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W

WALKING BEAM, A mechanical component attached to 動梁，

the main landing gear and a hinged support which helps 主起落架上，一端連在減震支柱上，另一端連在鉸接支

the actuator during retraction of the main gear. 撐上，用以協助作動筒收主起落架的機械部件。

WATER LINE, A horizontal reference plane along the 水線，

fuselage for vertical measurements of the airplane. 沿著機身展向，用以量取垂直方向的距離（或長度）的

                                               水平基準面。

WATER SEPARATOR, A component in the air        除水器，

conditioning system for removing water from the air 空調系統內，用以在空氣循環機的空氣下游除去空氣中

downstream of the air cycle machine.           的水份的部件。

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