First steps taken in quest to prove backpack vtol aircraft 探索背包式垂直起落飞行器迈出了第一步
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Vtol total liquid volume 液相总体积
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Breakthroughs in modern gyroplane technology - an introduction to the advances in gyroplane technology and the emerging market opportunities for a new generation of gyroplanes ranging from small vtol & ustol gyroplanes to large vtol gyrodyne airliners or freighters with 20 ton payload capacity 现代旋翼机科技的突破-介绍旋科技的进步,以及新一代旋翼机的市场机会,从小型超短距离升降和垂直升降的旋翼机到可垂直升降,载重20吨以上的大型直升旋翼客机和货运机
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Secondly , we introduce the theory that flat systems , an important subclass of nonlinear systems introduced via differential algebraic methods , are defined in a infinite dimensional differential geometrical framework . utilizing this method , the control system of the vtol aircraft becomes a linear control system . finally , we introduce the theory that is found by my teacher , wanghong professor 3 、应用平坦性分析方法和整体微分几何方法分别分析了pvtol飞机在其起飞过程时的控制律，得到了该系统的整体化方程，指出了该系统是能控能观的，并且指出该系统是平坦的控制系统，可以通过动态状态反馈和适当的坐标变换使之变成线性系统。
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Tilt - rotor aircraft combine the vertical takeoff and landing ( vtol ) capability of helicopters with the high speed performance of turboprop airplanes . located at the tips of the wing , the prop - rotors act as helicopter rotors when flying vertically and as airplane propellers in cruising flight 倾转旋翼飞机翼尖安装可以倾转的发动机短舱和旋翼系统,可以在飞行中根据需要在固定翼模式和直升机模式之间转换,充分发挥直升机垂直起降、悬停及固定翼飞机高速巡航的优点。
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In this paper , the major subject investigated is the ducted fan vertical take - off and landing ( vtol ) uav . compared with normal fixed - wing uav , it has so many strong points such as be convenient to take - off and land , good adaptability and long hover time . we analyze and summary information of foreign uavs , then calculate the figure dimension of our uav , and draw the uav structure configuration and the outside view drawing of three dimensional structure 本课题的研究对象是涵道风扇式垂直起落无人机,与一般的固定翼无人机相比,它有着起落方便、适应性强、可以在空中长时间盘旋等优点,本文通过对相关飞行器资料的分析总结,给出了无人机的大体结构尺寸,并画出了无人机的结构布局图和三维结构外观图。
