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This paper presents a systematic design approach for an unconventional UAV, J-Lion. J-Lion is a UAV featured by its hybrid flight capability in both VTOL and fixed-wing modes. Besides, a morphing wing concept is also realized by the extensible wing design. To reduce the development cycle, our approach takes into account the common factors systematically in the conceptual design phase, including overall...
In this paper, we present the development of a reconfigurable hybrid unmanned aerial vehicle (UAV): U-Lion. U-Lion is a small-scale UAV that is capable of vertical takeoff and landing (VTOL) and fixed-wing flight modes through its unique mechanical design. Mainly built with carbon fiber and Expanded PolyOlefin (EPO) foam, U-Lion is equipped with an array of electronic avionic components which enable...
The recent development of small yet sophisticated sensors has led to the development of smaller unmanned aerial vehicles, especially in the form of quadrotor. When it is limited by the availability of the reverse propellers, the conventional quadrotor will no longer be realizable, and thus introducing the 4-standard-propeller (4SP) quadrotor design. This paper presents a comprehensive nonlinear modeling...
Hierarchical dynamic inversion (HDI) is proposed together with newly developed variant-factor and recursive control techniques to design autonomous flight control (AFC) laws for fixed-wing aircraft. HDI is applicable to control design of some non-affine nonlinear systems to which dynamic inversion is not applicable. The AFC law designed with HDI at the nominal flight condition is applicable to other...
In recent years, research and development of unmanned vehicles have gained much attention in the academic and military communities worldwide. Objects like unmanned aircraft, underwater exploiters, satellites and intelligent robotics are widely investigated as they have potential applications in both military and civilian domains. We present in this paper a brief overview on miniature fixed-wing unmanned...
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