Title:
ブレードの可変捩り角機構を有する回転翼航空機
Document Type and Number:
Japanese Patent JP7138118
Kind Code:
B2
Abstract:
Provided is a rotor craft that is capable of changing the torsional angle of a blade with a relatively simple configuration by suitably driving an actuator, even if the actuator is a low-power actuator. A helicopter (10) includes torsion applying mechanisms (40), each of which twists a proximal end portion of a corresponding one of blades (18) relative to a distal end portion of the corresponding blade (18) about a center axis (A) of the blade (18). Each of the blades (18) includes: a spar (23) including a proximal end portion connected to a hub (17); and a skin (24) in which the spar (23) is inserted, such that a distal end portion of the skin (24) and a distal end portion of the spar (23) are connected to each other, and such that other portions of the skin (24) than the distal end portion are rotatable relative to the spar (23) about a center axis of the spar (23). The hub (17) includes: a hub body (20) mounted to a main rotor shaft (16); and a hub arm (21) that connects the spar (23) to the hub body (20).
Inventors:
Atsushi Hayashida
Tadashi Wakatsuki
Tadashi Wakatsuki
Application Number:
JP2019559234A
Publication Date:
September 15, 2022
Filing Date:
December 14, 2018
Export Citation:
Assignee:
Kawasaki Heavy Industries, Ltd.
International Classes:
B64C11/32; B64C27/467; B64C27/473
Foreign References:
| US20140154074 | ||||
| WO2004045948A1 | ||||
| GB2464678A | ||||
| GB1047568A | ||||
| WO1998030446A2 | ||||
| US9139297 | ||||
| EP3246247A1 | ||||
| EP2796368A1 |
Attorney, Agent or Firm:
Aiko Patent Office, a patent business corporation