Patents Assigned to Japan Aerospace Exploration Agency
  • Patent number: 12278407
    Abstract: A method of controlling a fuel cell device includes: a step of supplying hydrogen to a hydrogen supply unit; a step of measuring a voltage between a fuel electrode and an oxidant electrode and determining whether the voltage is equal to or greater than a reference voltage; and a step of discharging a gas containing oxygen from the gas supply unit to the outside while supplying the gas to the gas supply unit when the voltage is equal to or greater than the reference voltage.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: April 15, 2025
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Yoshitsugu Sone, Motohiko Sato
  • Patent number: 12269619
    Abstract: Provided is a method of controlling horizontal translational motion of a rocket without changing the attitude of the body and without increasing manufacturing costs and operation costs. This allows for accurate execution of rocket landing operation. A rocket control system includes a gimbal actuator that controls a steering angle of a gimbal mechanism located on a lower side of the body of the rocket with respect to the center of gravity; a fin actuator that controls a steering angle of an attitude control fin located on an upper side of the body of the rocket with respect to the center of gravity; a measurement unit that measures a physical quantity related to motion of the body of the rocket; and a control unit that controls the gimbal mechanism and the attitude control fin according to a result of measurement by the measurement unit to control horizontal translational motion of the rocket.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: April 8, 2025
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventor: Shinji Ishimoto
  • Patent number: 12255397
    Abstract: An antenna according to an embodiment of the present invention includes a primary radiator and a reflector mirror. The primary radiator radiates radio waves. The reflector mirror reflects radio waves radiated from the primary radiator, has same aperture diameter and height as a parabolic reflector mirror whose aperture diameter is equal to or less than 1.7 times a wavelength of the radio waves, and has a non-parabolic surface as a mirror surface shape.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: March 18, 2025
    Assignee: Japan Aerospace Exploration Agency
    Inventor: Toshihiro Sezai
  • Patent number: 12214863
    Abstract: A riblet structure includes a plurality of wave-shaped riblets on a surface thereof, in which each of the riblets has a smaller peak height as an angle formed between a ridge line and a fluid flow direction becomes larger, a width between peak bases in a direction orthogonal to the fluid flow direction becomes smaller as the angle becomes larger, and an angle formed between a slope of a peak of the riblet and the surface at the peak base or a curvature at the peak base is identical at any position in a cross-sectional shape in the direction orthogonal to the fluid direction.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: February 4, 2025
    Assignee: Japan Aerospace Exploration Agency
    Inventors: Mitsuru Kurita, Hiroyuki Abe, Hidetoshi Iijima, Seigo Koga
  • Patent number: 12195169
    Abstract: A raised structure for reducing frictional drag due to viscosity of a flow toward an object in a direction defining an acute angle with a leading edge of the object. The raised structure includes raised bodies configured to be provided on a surface of the object at the leading edge on a downstream side of a stagnation point of the flow. A height of each raised body changes along a convex curve, and the raised bodies are arranged in an array to define a first uneven shape changing periodically in a first cross section configured to have a constant distance from the stagnation point and be orthogonal to the surface, and a second uneven shape changing in a second cross section configured to be orthogonal to a line composed of the stagnation point and the first cross section, the second uneven shape having concave and convex portions that change periodically.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: January 14, 2025
    Assignees: TOHOKU UNIVERSITY, JAPAN AEROSPACE EXPLORATION AGENCY, MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Makoto Hirota, Yuji Hattori, Yuki Ide, Hikaru Takami, Minoru Yoshimoto
  • Patent number: 12180442
    Abstract: A method for aggregating cell masses includes performing a cell mass aggregating step of rotating a rotating body containing a specific gravity adjustment solution and cell masses to aggregate the cell masses, the specific gravity adjustment solution having biocompatibility, the cell masses having a lower specific gravity than the specific gravity adjustment solution.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: December 31, 2024
    Assignees: PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITY, Japan Aerospace Exploration Agency
    Inventors: Hideki Taniguchi, Tomomi Tadokoro, Tetsuya Sakashita, Satoshi Matsumoto, Satoshi Adachi, Akira Higashibata
  • Patent number: 12170496
    Abstract: A motor control device includes: a power source device including a DC-output power conversion device having a first mode for outputting first voltage and a second mode for outputting second voltage higher than the first voltage; a power supply device; and a control device, and controls a motor. When a flying object takes off, the control device controls the power conversion device in the second mode. When the control device judges that flight information which is one or both of information of a motor parameter obtained along with control for the motor and information of an environmental factor relevant to the flight altitude satisfies a predetermined condition, or when the control device has received an operation mode signal for which the first mode is selected on the basis of the flight information during control for the motor, the control device controls the power conversion device in the first mode.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: December 17, 2024
    Assignees: MITSUBISHI ELECTRIC CORPORATION, JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Kenji Fujiwara, Hisatoshi Fukumoto, Tomoki Takegami, Tetsuya Kojima, Akihiko Iwata, Masahiro Sugahara, Hiroshi Kobayashi, Mari Nishiyama, Akira Nishizawa
  • Patent number: 12160050
    Abstract: A phased-array antenna device with a long operating life without mechanical parts, has a high spatial resolution, and realizes microwave observation of broadband and high-frequency resolution. The phased-array antenna device performs direct A/D conversion through a BPF on an antenna analog signal amplified by an amplifier. Then, the device performs a second cross-spectrum calculation after conversion into complex frequency data through FFT. To detect a weak electromagnetic wave, the device repeatedly performs a second FFT over a long period and lastly performs integration.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: December 3, 2024
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Takashi Maeda, Naoya Tomii, Akihisa Uematsu, Kazuya Inaoka, Noriyuki Kawaguchi
  • Patent number: 12157622
    Abstract: [Object] To provide a thermal insulation container with which the heat/cold insulation effect is kept for longer time without increasing the size and weight of the thermal insulation container. [Solving Means] The thermal insulation container includes an inner container, an outer container, and an overlap region. The inner container includes a first bottom portion, a first side wall portion that extends in a first direction from the first bottom portion and forms a first open end portion, and a first vacuum layer continuously formed inside the first bottom portion and the first side wall portion. The outer container includes a second bottom portion, a second side wall portion that extends in a second direction opposite to the first direction from the second bottom portion and forms a second open end portion, and a second vacuum layer continuously formed inside the second bottom portion and the second side wall portion.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: December 3, 2024
    Assignees: JAPAN AEROSPACE EXPLORATION AGENCY, TIGER CORPORATION, TECHNOSOLVER CORPORATION
    Inventors: Kazuhiro Miyazaki, Ryuta Hatakenaka, Kazuya Kitamoto, Daisuke Horii, Kazuyuki Nakamura
  • Patent number: 12110841
    Abstract: Provided is a supersonic aircraft including: a shield that shields an engine exhaust flow discharged from a jet engine accommodated in an engine nacelle mounted on a fuselage of the aircraft to thereby reduce sonic booms due to the engine exhaust flow; and an exhaust nozzle that is provided in an exhaust port of the engine nacelle and that generates a sound source for high-frequency components at a position at which the shield is capable of shielding the high-frequency components of the engine exhaust flow, to thereby reduce jet noise having the high-frequency components, and promotes mixing of the engine exhaust flow that generates low-frequency noise components with an external air flow to thereby reduce jet noise having the low-frequency components.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: October 8, 2024
    Assignee: Japan Aerospace Exploration Agency
    Inventor: Junichi Akatsuka
  • Patent number: 12072364
    Abstract: According to one implementation, an aviation system 100 includes electric field sensors 112 and a ground system 114 including a computer configured to communicate with each of the electric field sensors 112. The computer is configured to: acquire electric field intensities from the electric field sensors 112 respectively, and generate a first electric field distribution on a ground surface 16 based on the electric field intensities; derive a matrix; derive a pseudo inverse matrix of the matrix; derive an electric charge distribution on the horizontal plane by multiplying the pseudo inverse matrix by the first electric field distribution on the ground surface 16; and derive a second electric field distribution on a flight path based on the electric charge distribution. The first electric field distribution on the ground surface 16 is derived by multiplying the matrix by electric charges temporarily set on a horizontal plane at a predetermined altitude.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: August 27, 2024
    Assignees: SUBARU CORPORATION, JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Hiroyuki Tsubata, Hiromitsu Miyaki, Takao Okada
  • Publication number: 20240233982
    Abstract: The insulation covered conductive wire includes a conductive wire, a non-adherent, laterally wound insulation member and a non-adherent braided insulation member. The non-adherent, laterally wound insulation member covers an outer circumference of the conductive wire without adhering thereto and is formed by laterally winding a plurality of first ceramic fibers constituted from a plurality of first ceramic strands in an extending direction of the conductive wire. The first ceramic strands are not in contact with each other and do not adhere to each other. The non-adherent braided insulation member covers an outer circumference of the non-adherent, laterally wound insulation member without adhering thereto and is formed by braiding a plurality of second ceramic fibers constituted from a plurality of second ceramic strands. The second ceramic fibers are not in contact with each other and do not adhere to each other.
    Type: Application
    Filed: April 20, 2022
    Publication date: July 11, 2024
    Applicants: FURUKAWA ELECTRIC CO., LTD., JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Tomoya NOMURA, Yoichi ISO, Hiroyuki TAMAOKA, Shinatora CHO, Satoshi HOSODA
  • Patent number: 12033527
    Abstract: [Object] To suppress the influence of uncertainties on a time of arrival while reducing the number of speed adjustments or the like to suppress the deterioration of fuel efficiency and comfort.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: July 9, 2024
    Assignee: Japan Aerospace Exploration Agency
    Inventor: Yoshinori Matsuno
  • Patent number: 12025110
    Abstract: A structure for preventing an electric discharge between devices without any need for a dedicated device when mounted on an artificial satellite is provided. A charging mitigation device for reducing a potential difference between two or more physical objects includes an electric thruster (100) configured to generate plasma (PL), wherein the two or more physical objects are covered with the plasma (PL) generated from the electric thruster (100).
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: July 2, 2024
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Teppei Okumura, Shinatora Cho, Yasushi Ohkawa, Hiroyuki Okamoto
  • Patent number: 12017800
    Abstract: [Object] To realize an improvement in design accuracy and a reduction in design time in a process of matching an equivalent cross-sectional area of a design shape of a supersonic aircraft to a target equivalent cross-sectional area in a sonic boom reduction method based on an equivalent cross-sectional area.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: June 25, 2024
    Assignee: Japan Aerospace Exploration Agency
    Inventor: Tatsunori Yuhara
  • Patent number: 12019231
    Abstract: Provided is a device for designed for use with a telescope having a primary mirror, such as a reflecting telescope, and to accurately analyzing the size of a step between paired regions of a plurality of mirror segments of the primary mirror.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: June 25, 2024
    Assignee: Japan Aerospace Exploration Agency
    Inventor: Seichi Sato
  • Patent number: 12015361
    Abstract: A motor control device includes: a step-down device including a DC-output power conversion device having a first mode for outputting first voltage and a second mode for outputting second voltage lower than the first voltage; a power supply device; and a control device, and controls a motor. When a flying object takes off, the control device controls the power conversion device in the first mode. When the control device judges that flight information which is one or both of information of a motor parameter obtained along with control for the motor and information of an environmental factor relevant to the flight altitude of satisfies a predetermined condition, or when the control device has received an mode signal for which the second mode is selected on the basis of the flight information during control for the motor, the control device controls the power conversion device in the second mode.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: June 18, 2024
    Assignees: MITSUBISHI ELECTRIC CORPORATION, JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Kenji Fujiwara, Hisatoshi Fukumoto, Tomoki Takegami, Tetsuya Kojima, Akihiko Iwata, Masahiro Sugahara, Hiroshi Kobayashi, Mari Nishiyama, Akira Nishizawa
  • Patent number: 12000780
    Abstract: An information processing system includes an irradiation unit configured to irradiate a deposited material with electromagnetic waves, a detection unit configured to detect scattered waves or transmitted waves of the electromagnetic waves with which the deposited material has been irradiated by the irradiation unit, and a determination unit configured to determine a state of the deposited material from an image based on the scattered waves or the transmitted waves detected by the detection unit.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: June 4, 2024
    Assignees: JAPAN AEROSPACE EXPLORATION AGENCY, MITSUBISHI ELECTRIC SOFTWARE CORPORATION
    Inventors: Atsushi Kanda, Yuji Satoh, Ippei Uchikata, Tomotaka Yamamoto
  • Patent number: 11993372
    Abstract: A morphing wing includes a pantograph mechanism capable of being extended and contracted in a predetermined direction, a plurality of flight feathers attached to the pantograph mechanism, connection members configured to connect flight feathers adjacent to each other among the plurality of flight feathers, a first rotating mechanism configured to rotate the pantograph mechanism around one axis of a plane that intersects the direction, and a second rotating mechanism configured to rotate the pantograph mechanism around another axis of the plane. Each of the plurality of flight feathers is configured so that an angle formed by adjacent flight feathers connected via the connection members increases as the pantograph mechanism extends.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: May 28, 2024
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventor: Daichi Wada
  • Patent number: D1060002
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: February 4, 2025
    Assignees: Japan Aerospace Exploration Agency, ORBITAL ENGINEERING INC.
    Inventors: Yutaka Umemura, Takeshi Miyakita, Masanori Saitoh