Electric rim-driven contra-rotating ducted fan

The invention discloses an electric rim-driven contra-rotating ducted fan, belongs to the field of aviation electric propulsion, and relates to a rim-driven contra-rotating ducted propeller for aviation. According to the electric rim-driven contra-rotating ducted fan, the two stages of contra-rotating fans are arranged in the duct, the conical sliding bearings are adopted on the two sides of the fan to meet the axial thrust and radial rotating supporting requirements of the fan, the structure is of a hub-free structure, and a supporting shaft system structure of an existing electric rim-driven ducted fan is removed; and the thrust-weight ratio and the aerodynamic performance of the ducted fan are effectively improved. And heat dissipation vent holes are designed in the ducts, so that faults of the motor caused by high temperature are avoided. 本发明一种电动轮缘驱动对转涵道风扇，属于航空电推进领域，是一种航空用的轮缘驱动型对转涵道式推进器。所述的一种电动轮缘驱动对转涵道风扇，在涵道内设置两级对转风扇，在风扇两侧采用锥形滑动轴承满足风扇轴向推力和径向转动支撑，该结构为无轮毂构型，去除了现有电动轮缘驱动涵道风扇的支撑轴系结构，有效提高了涵道风扇推重比和气动性能。并通过在涵道内设计