Patents by Inventor Taku NONOMURA

Taku NONOMURA 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).

  • Flow control method and rotary wing unit
    Patent number: 11718388
    Abstract: A flow control method is a flow control method of controlling flow around a blade of a rotary wing, a plasma actuator being disposed at the blade. The flow control method includes: determining a characteristic frequency ratio that is a characteristic value among frequency ratios, each of the frequency ratios being a ratio between an actuator driving frequency and an angle of attack changing frequency, the actuator driving frequency being a frequency of an applied voltage applied to the plasma actuator, the angle of attack changing frequency being a frequency at which an angle of attack of the blade changes in accordance with a rotation angle of the blade; setting the actuator driving frequency such that the frequency ratio becomes the characteristic frequency ratio; and applying a voltage of the set actuator driving frequency to the plasma actuator to control the flow around the blade.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: August 8, 2023
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, TOHOKU UNIVERSITY
    Inventors: Hidemasa Yasuda, Akio Ochi, Kenji Hayama, Tomoka Tsujiuchi, Kazuyuki Nakakita, Taku Nonomura, Atsushi Komuro, Keisuke Takashima
  • FLOW CONTROL METHOD AND ROTARY WING UNIT
    Publication number: 20220201832
    Abstract: A flow control method is a flow control method of controlling flow around a blade of a rotary wing, a plasma actuator being disposed at the blade. The flow control method includes: determining a characteristic frequency ratio that is a characteristic value among frequency ratios, each of the frequency ratios being a ratio between an actuator driving frequency and an angle of attack changing frequency, the actuator driving frequency being a frequency of an applied voltage applied to the plasma actuator, the angle of attack changing frequency being a frequency at which an angle of attack of the blade changes in accordance with a rotation angle of the blade; setting the actuator driving frequency such that the frequency ratio becomes the characteristic frequency ratio; and applying a voltage of the set actuator driving frequency to the plasma actuator to control the flow around the blade.
    Type: Application
    Filed: April 2, 2020
    Publication date: June 23, 2022
    Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, TOHOKU UNIVERSITY
    Inventors: Hidemasa YASUDA, Akio OCHI, Kenji HAYAMA, Tomoka TSUJIUCHI, Kazuyuki NAKAKITA, Taku NONOMURA, Atsushi KOMURO, Keisuke TAKASHIMA
  • FLOW CONTROL METHOD AND ROTARY WING UNIT
    Publication number: 20220041269
    Abstract: A flow control method is a flow control method of controlling flow around a blade of a rotary wing, a plasma actuator being disposed at the blade. The flow control method includes: determining a characteristic frequency ratio that is a characteristic value among frequency ratios, each of the frequency ratios being a ratio between an actuator driving frequency and an angle of attack changing frequency, the actuator driving frequency being a frequency of an applied voltage applied to the plasma actuator, the angle of attack changing frequency being a frequency at which an angle of attack of the blade changes in accordance with a rotation angle of the blade; setting the actuator driving frequency such that the frequency ratio becomes the characteristic frequency ratio; and applying a voltage of the set actuator driving frequency to the plasma actuator to control the flow around the blade.
    Type: Application
    Filed: October 22, 2021
    Publication date: February 10, 2022
    Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, TOHOKU UNIVERSITY
    Inventors: Hidemasa YASUDA, Akio OCHI, Kenji HAYAMA, Tomoka TSUJIUCHI, Kazuyuki NAKAKITA, Taku NONOMURA, Atsushi KOMURO, Keisuke TAKASHIMA