Design and hovering control of a twin rotor tail-sitter UAV

Wang W F, Zhu J H, Kuang M C, et al

Sci China Inf Sci, 2019, 62(9): 194202

The tail-sitter unmanned aerial vehicles (UAVs) combine the vertical takeoff and landing (VTOL) capabilities of rotary-wing UAVs and the efficient long-distance flight capability of fixed-wing UAVs. When compared with other hybrid aircraft configurations such as tilt-rotor and tilt-wing UAVs, the tail-sitter UAV possesses the simplest configuration and requires no extra mechanisms for performing the VTOL aneuver. This brings several benefits including high payload and low susceptibility to malfunctions.
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