Study on the effect of tilting-rotor structure on the lift of small tilt rotor aircraft

In this paper, the influence of the tilting-rotor structure parameters on the aerodynamic characteristics of a small tilt rotor unmanned aerial vehicle (UAV) is studied. The simplified model of tilt rotor unmanned aerial vehicle (UAV) is established by using SolidWorks software, and the model is divided into unstructured grid by ICEM software. Finally, set the corresponding boundary conditions in the FLUENT software and then simulated. By simulating the flight state of the tilt rotor unmanned aerial vehicle (UAV) in the fixed wing mode, the lift-drag aerodynamic characteristics of the aircraft in that flat flight mode are obtained. On the other hand, researched the effect of the tilting angle of the tilting-rotor mechanism, the size of the multi-rotor structure (the distance of the tilting-rotor mechanism from the fixed wing), and the rotor installation distance of the coaxial twin propeller mechanism on the complex flow field between rotor and fixed wing. Obtained some meaningful conclusions, which are useful for the future design of the small tilt rotor unmanned aerial vehicle.