To provide a ducted fan device and an aircraft capable of suppressing separation at the lip portion, enhancing thrust, enhancing quietness, and the like.SOLUTION: A ducted fan device comprises: a plurality of fan devices 20 each having a fan 22 that rotates around an axis Xf to generate an airflow and a small cylindrical duct 23 that surrounds the fan 22 around the axis Xf and extends in a direction of the axis Xf; and a cylindrical large duct 30 extending in a direction of an axis Xd parallel to the axis Xf. When viewed from the direction of the axis Xd, the respective fan devices 20 are arranged inside the large duct 30. When viewed from a direction orthogonal to the axis Xd, the respective small ducts 23 are arranged at least partially outside the large duct 30 on an upstream side in a flow direction of the airflow.SELECTED DRAWING: Figure 3
【課題】リップ部における剥離の抑制、推力の向上及び静粛性の向上等を実現できるダクテッドファン装置及び航空機を提供する。【解決手段】軸線Xf周りに回転して気流を発生させるファン22及びファン22を軸線Xf周りに包囲するとともに軸線Xf方向に延びる円筒状の小ダクト23を有する複数のファン装置20と、軸線Xfに平行な軸線Xd方向に延びる円筒状の大ダクト30と、を備え、軸線Xd方向から見たとき、各ファン装置20は、大ダクト30の内側に配置され、軸線Xdと直交する方向から見たとき、各小ダクト23の少なくも一部分が、気流の流れ方向の上流側における大ダクト30の外部に配置されている。【選択図】図3
DUCTED FAN DEVICE AND AIRCRAFT
ダクテッドファン装置及び航空機
2022-11-25
Patent
Electronic Resource
Japanese
IPC: | B64C AEROPLANES , Flugzeuge |