Browse Publications Technical Papers 2022-01-5092

Design of Four Ducted Fan-Type Electric Vertical Take-off and Landing Flying Car 2022-01-5092

Under the emerging urban air mobility (UAM) concept, electric vertical take-off and landing (eVTOL) aircraft were designed to alleviate urban traffic congestion due to their advantages of low take-off and landing site requirements, less pollution, low noise, and strong stability. However, due to the high-level power consumption of eVTOL and only having air flight mode, this kind of aircraft has a severe shortage of cruising range. To improve the endurance and dynamic performance, the flying car designed in this paper added a ground driving mode based on eVTOL and used distributed ducted fans to provide lift. And the influence of different power transmission routes on the dynamic and economic performance of the flying car was analyzed. On this basis, the overall take-off weight of the flying car was estimated through an iterative algorithm, and parameter design and power system matching for each part of the components were conducted. Finally, this paper used MATLAB/Simulink to build a flying car power system model and verified the performance of the flying car through simulation. The results show that the ducted fan is superior to the isolated fan in providing both lift and noise control. The maximum flying speed of the flying car that adopts the power transmission route of four in-wheel motors and four-rotor motors is 5.1% higher than that of four wheel-side motors combined with mechanical transmission structures. In pure ground driving conditions, the flying car can continue to travel 627.6 km at 100 km/h. In pure air flight conditions, the flying car can continue to fly 88.37 km at 100 km/h. In hybrid conditions, the flying car can continue to travel 418.4 km on the ground at 100 km/h after taking off to avoid traffic obstacles five times, each time the distance is 2 km.


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