Patents by Inventor Masashi Shigemi

Masashi Shigemi 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).

  • High-altitude capable wide velocity range flight velocity vector measurement probe and measurement system
    Patent number: 7480548
    Abstract: It is an object of the present invention to solve the problem of a drop in precision in conventional systems using a square pyramid type five-hole probe due to the drop in atmospheric pressure in high altitude ranges, and to provide a wide velocity range flight velocity vector measurement system that can prevent a drop in measurement precision. Furthermore, it is also an object of the present invention to provide a method for eliminating the effects of detection fluctuations caused by adhering water droplets, ice particles or dust in a wide velocity range flight velocity vector measurement system.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: January 20, 2009
    Assignees: Japan Aerospace Exploration Agency, Fuji Heavy Industries Ltd., Tokyo Aircraft Instrument Co., Ltd.
    Inventors: Masashi Shigemi, Akira Koike, Makoto Ueno, Tomonari Hirotani, Teruomi Nakaya, Hiroshi Wakai, Toru Iwata
  • High-altitude capable wide velocity range flight velocity vector measurement probe and measurement system
    Publication number: 20060178790
    Abstract: It is an object of the present invention to solve the problem of a drop in precision in conventional systems using a square pyramid type five-hole probe due to the drop in atmospheric pressure in high altitude ranges, and to provide a wide velocity range flight velocity vector measurement system that can prevent a drop in measurement precision. Furthermore, it is also an object of the present invention to provide a method for eliminating the effects of detection fluctuations caused by adhering water droplets, ice particles or dust in a wide velocity range flight velocity vector measurement system.
    Type: Application
    Filed: September 13, 2005
    Publication date: August 10, 2006
    Applicants: JAPAN AEROSPACE EXPLORATION AGENCY, FUJI HEAVY INDUSTRIES LTD., TOKYO AIRCRAFT INSTRUMENT CO., LTD.
    Inventors: Masashi Shigemi, Akira Koike, Makoto Ueno, Tomonari Hirotani, Teruomi Nakaya, Hiroshi Wakai, Toru Iwata
  • Arithmetic processing method and system in a wide velocity range flight velocity vector measurement system using a square truncated pyramid-shape five-hole pitot probe
    Patent number: 6336060
    Abstract: An arithmetic processing method and system in a wide velocity range flight velocity vector measurement system using a square truncated pyramid-shape five-hole Pitot probe. Approximation equations that determine attack angle &agr; and sideslip angle &bgr; in the form of third-order equations concerning attack angle pressure coefficient C&agr; and sideslip angle pressure coefficient C&bgr;, which are known numbers, are expressed in the form of a polynomial equation concerning Mach number M, where the coefficients are obtained from a lookup table.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: January 1, 2002
    Assignee: National Aerospace Laboratory of Science and Technology Agency
    Inventors: Masashi Shigemi, Teruomi Nakaya, Shigemi Shindo, Minoru Takizawa, Takeshi Ohnuki