空气舵是保障气垫船操纵的关键系统装置，空气舵的气动力性能直接决定了全船的操纵性能。
Air rudder is a critical equipment in ensuring the maneuverability of aircushion vehicle. Also its aerodynamic performance directly affect the overall maneuverability of this vehicle.
当时高度存在大误差时，采用副气囊和空气舵组合控制改变飞艇的姿态实现快速爬升或下降；
It is present a method to design altitude control system for a high altitude airship using auxiliary ballonet charge or deflation and elevator combination control.
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