The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2025
Filed:
May. 28, 2021
Subaru Corporation, Tokyo, JP;
Japan Aerospace Exploration Agency, Chofu, JP;
Wataru Kobayashi, Tokyo, JP;
Hirotaka Hayashi, Tokyo, JP;
Mizuki Nakamura, Tokyo, JP;
Masafumi Sasaki, Tokyo, JP;
Yasutada Tanabe, Chofu, JP;
Noboru Kobiki, Chofu, JP;
SUBARU CORPORATION, Tokyo, JP;
Japan Aerospace Exploration Agency, Tokyo, JP;
Abstract
Provided is a flight efficiency improving system for a compound helicopter with a rotor and fixed wings. In forward flight of the compound helicopter, the flight efficiency improving system does not perform a cyclic pitch control of the rotor so as to allow a difference in lift generated by the rotor between an advancing side and a retreating side of the rotor, or the flight efficiency improving system performs the cyclic pitch control to an extent that does not completely eliminate the difference. The fixed wings are provided respectively on left and right sides of a body and are asymmetric to each other so that influence of an aerodynamic interference between the rotor and the fixed wings is reduced.