Description: During the flight, the unmanned airship often subject to increase or decrease the influence of the air flow, making the airship flight instability, affecting the execution of the task. The main research objectives of this paper are: ST-3 airship for air flow, design of control systems. Through the control of the airship engine thrust vector that change the direction of the airship engine thrust to the airship provides both horizontal direction, but also provide a downward or upward force component helping elevator overcome the decline or updraft force airship easy to maintain a predetermined height to improve handling performance of the airship. Specific work mainly includes the following aspects:
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