A small scale ducted-prop aerial vehicle has been developed in this study. The configuration design and aerodynamic analysis for ducts which shrouding props or fans have been conducted using axi-symmetric and three-dimensional flow calculations. The ground test for the isolated prop and ducted-prop were performed and the aerodynamic effects due to duct were investigated. For the attitude control of ducted prop vehicle, various concepts of control in rotary and airplane mode have been proposed and implemented to the frame vehicle which is composed of ducted prop and drive system. The small scale ducted-prop vehicle based on the conceptual design was fabricated and flight tests in rotary and partial conversion mode have been conducted with the aid of manual control.
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