Patents by Inventor Masahiko SUGIURA

Masahiko SUGIURA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Main rotor blade and helicopter
    Patent number: 11214364
    Abstract: A main rotor blade 1, which is the main rotor blade 1 for a high-velocity helicopter, includes: a blade root part 10 having a length of 30% or more of a rotor radius R; and a blade main body 20 continuous with the blade root part 10. Preferably, a cross-sectional shape of the blade root part 10 satisfies (x/a)m+(y/b)m=1 and a>b, where m: arbitrary number, x: chord length direction, and y: blade thickness direction.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: January 4, 2022
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Masahiko Sugiura, Yasutada Tanabe, Noboru Kobiki, Takashi Aoyama
  • MAIN ROTOR BLADE AND HELICOPTER
    Publication number: 20210094681
    Abstract: [Object] To provide a main rotor blade for a helicopter such as a main blade type helicopter, which may reduce a drag coefficient during high-velocity forward flight and which provides easy control. It is an object of the present invention to provide a helicopter including such a main rotor blade. [Solving Means] A main rotor blade 1, which is the main rotor blade 1 for a high-velocity helicopter, includes: a blade root part 10 having a length of 30% or more of a rotor radius R; and a blade main body 20 continuous with the blade root part 10. Preferably, a cross-sectional shape of the blade root part 10 satisfies (x/a)m+(y/b)m=1 and a>b, where m: arbitrary number, x: chord length direction, and y: blade thickness direction.
    Type: Application
    Filed: February 7, 2018
    Publication date: April 1, 2021
    Inventors: Masahiko SUGIURA, Yasutada TANABE, Noboru KOBIKI, Takashi AOYAMA