Patents by Inventor Hatsuo Mori
Hatsuo Mori 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).
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Publication number: 20220364529Abstract: The combustor for a rocket engine includes a combustion room configured to cause a combustion reaction between a fuel and an oxidant, an injector configured to inject the fuel and the oxidant into the combustion room, and a nozzle skirt configured to inject combustion gas generated by the combustion reaction to an outside, and an inertance increasing portion configured to increase an equivalent inertance in a vibration equivalent circuit of the combustor for the rocket engine.Type: ApplicationFiled: August 1, 2022Publication date: November 17, 2022Applicant: IHI CorporationInventors: Yasuhiro ISHIKAWA, Shinji ISHIHARA, Hatsuo MORI
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Patent number: 11156516Abstract: An abnormality determination device according to one aspect of the present disclosure is an abnormality determination device that determines an abnormality of an inducer used for a pump, the abnormality determination device including a stress-response acquisition unit that acquires a stress response indicating a temporal change in stress applied to the inducer, an accumulated-fatigue-damage-degree calculation unit that calculates an accumulated fatigue-damage degree of the inducer based on the stress response, a lifetime-consumption-rate calculation unit that calculates a lifetime consumption rate that is a changing rate of the accumulated fatigue-damage degree with respect to time, and a determination unit that determines an abnormality of the inducer based on the accumulated fatigue-damage degree and the lifetime consumption rate, in which the inducer is used only for a predetermined use time per operation of the pump.Type: GrantFiled: December 19, 2016Date of Patent: October 26, 2021Assignee: IHI CorporationInventors: Hatsuo Mori, Keisuke Suzuki, Noriyoshi Mizukoshi, Takashi Ogai
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Patent number: 11073243Abstract: A low-temperature tank includes a container main body. The container main body includes a metal liner forming a storage space and a wall member formed of carbon fiber reinforced plastic wound on an outer peripheral surface of the metal liner. The metal liner includes a bent portion that extends in two directions intersecting each other on a surface thereof and that is bent to project toward the storage space.Type: GrantFiled: June 25, 2019Date of Patent: July 27, 2021Assignee: IHI CorporationInventors: Yasuhiro Ishikawa, Hatsuo Mori
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Patent number: 10767785Abstract: A pneumatically-actuated valve is provided in which a spring member that applies an axial force to a shaft connected to a valve body, in an axial direction of the shaft, and a valve-actuating pressure chamber that actuates the valve body by applying a force resisting the axial force to the shaft are provided inside a valve casing. The pneumatically-actuated valve includes an axial-force adjusting device that adjusts the magnitude of energy stored in the spring member, via a surface-pressure adjusting screw provided to be inserted through the valve casing, from the outside of the valve casing.Type: GrantFiled: October 17, 2016Date of Patent: September 8, 2020Assignee: IHI CorporationInventors: Kohei Taya, Hatsuo Mori, Tomoharu Oda, Masanori Suzuki
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Patent number: 10527189Abstract: A valve actuator is a valve actuator that drives opening and closing of a poppet valve and includes a motor and a transmission mechanism that transmits a drive force of the motor to the poppet valve. The transmission mechanism includes a booster mechanism. The booster mechanism is a three-dimensional toggle mechanism that includes a cylinder, an input disc that rotates about an axis in the cylinder, an output disc that reciprocates along an axial direction in the cylinder, and a link that connects the input disc and the output disc.Type: GrantFiled: April 30, 2018Date of Patent: January 7, 2020Assignee: IHI CorporationInventors: Kohei Taya, Hatsuo Mori, Kenji Hirai, Yu Hirata, Masahiro Tanaka, Takeshi Takaki
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Publication number: 20190309905Abstract: A low-temperature tank includes a container main body. The container main body includes a metal liner forming a storage space and a wall member formed of carbon fiber reinforced plastic wound on an outer peripheral surface of the metal liner. The metal liner includes a bent portion that extends in two directions intersecting each other on a surface thereof and that is bent to project toward the storage space.Type: ApplicationFiled: June 25, 2019Publication date: October 10, 2019Applicant: IHI CorporationInventors: Yasuhiro ISHIKAWA, Hatsuo MORI
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Publication number: 20190301401Abstract: The present invention provides a rocket fuel pump including a rotating body (4) mounted on a rotating shaft (3) and pressure-feeding rocket fuel when the rotating body (4) is rotationally driven by a drive source (T), and the rocket fuel pump includes a magnetic coupling (R) which is configured to magnetically couple the rotating shaft (3) and a drive shaft (10) of the drive source (T).Type: ApplicationFiled: June 17, 2019Publication date: October 3, 2019Applicant: IHI CorporationInventors: Taiichi MOTOMURA, Hatsuo Mori, Hiroyuki Sakaguchi
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Patent number: 10408707Abstract: An abnormality diagnosing method includes a model generation step of generating a simulation model of a monitoring target, an operation start step of starting an operation of the monitoring target, a measurement step of measuring an internal state quantity in the operating state of the monitoring target and extracting a measured value, a prediction step of inputting into the simulation model same control input value used in the operating state of the monitoring target and calculating a predicted value of the internal state quantity of the monitoring target, a Mahalanobis distance calculation step of calculating a Mahalanobis distance from a difference between the measured value and the predicted value, and an abnormality diagnosis step of diagnosing whether the operating state of the monitoring target is abnormal based on the Mahalanobis distance.Type: GrantFiled: July 31, 2017Date of Patent: September 10, 2019Assignee: IHI CorporationInventors: Hatsuo Mori, Noriyoshi Mizukoshi, Takashi Ogai, Yusuke Maru, Takayuki Yamamoto, Shinsuke Takeuchi, Satoshi Nonaka, Tsuyoshi Yagishita
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Patent number: 10407184Abstract: A debris removal device includes: an end mass adapted to approach debris to be removed; a debris capture device separably-mounted on the end mass; and a tether connecting the debris capture device and the end mass to each other. The debris capture device includes a harpoon adapted to penetrate into the debris, a shooting device adapted to shoot the harpoon, a guide member positioned to come into contact with the surface of the debris to adjust the shooting angle of the harpoon with respect to the surface of the debris, and a switch that sends the shooting signal to the shooting device. When the harpoon is penetrated into the debris, the end mass is separated from the debris capture device, and the tether is released into outer space.Type: GrantFiled: January 3, 2017Date of Patent: September 10, 2019Assignee: IHI CorporationInventors: Hatsuo Mori, Taku Izumiyama, Kozue Hashimoto, Satomi Kawamoto, Keiichi Hirako
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Publication number: 20190033152Abstract: An abnormality determination device according to one aspect of the present disclosure is an abnormality determination device that determines an abnormality of an inducer used for a pump, the abnormality determination device including a stress-response acquisition unit that acquires a stress response indicating a temporal change in stress applied to the inducer, an accumulated-fatigue-damage-degree calculation unit that calculates an accumulated fatigue-damage degree of the inducer based on the stress response, a lifetime-consumption-rate calculation unit that calculates a lifetime consumption rate that is a changing rate of the accumulated fatigue-damage degree with respect to time, and a determination unit that determines an abnormality of the inducer based on the accumulated fatigue-damage degree and the lifetime consumption rate, in which the inducer is used only for a predetermined use time per operation of the pump.Type: ApplicationFiled: December 19, 2016Publication date: January 31, 2019Applicant: IHI CorporationInventors: Hatsuo MORI, Keisuke SUZUKI, Noriyoshi MIZUKOSHI, Takashi OGAI
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Publication number: 20190032605Abstract: An electric power-assisted liquid-propellant rocket propulsion system includes: a pre-burner for generating combustion gas of a fuel and an oxidant; a main combustor for burning mixed gas of the fuel and the combustion gas discharged from the pre-burner; a turbopump including a turbine rotated by a flow of the combustion gas and a first pump and a second pump driven by a rotation of the turbine, the turbopump supplying the fuel from a fuel tank to the pre-burner and supplying the oxidant from an oxidant tank to the pre-burner and the main combustor; an electric motor for rotating the turbine before combustion of the pre-burner and the main combustor; and a clutch for connecting the electric motor and the turbine and releasing the connection between the electric motor and the turbine.Type: ApplicationFiled: October 1, 2018Publication date: January 31, 2019Applicant: IHI CORPORATIONInventors: Hiroyuki SAKAGUCHI, Hatsuo Mori, Yasuhiro Ishikawa, Koichi Miyoshi
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Patent number: 10145481Abstract: Provided is a pneumatic valve in which a seal member; a shaft provided with a valve body capable of abutting against the seal member; and a valve-actuating pressure chamber that moves the shaft in an axial direction to actuate the valve body is provided within a valve casing. The shaft has a first member that receives pressure from the valve-actuating pressure chamber, and a second member that includes the valve body and is movable relative to the first member in the axial direction. The pneumatic valve further has a stopper that is provided in a movement path of the first member, and a disc spring that is sandwiched between the first member and the second member, has elastic energy accumulated therein in a state where the first member is in contact with the stopper, and presses the valve body against the seal member.Type: GrantFiled: December 2, 2016Date of Patent: December 4, 2018Assignee: IHI CorporationInventors: Kohei Taya, Hatsuo Mori
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Publication number: 20180245710Abstract: A valve actuator is a valve actuator that drives opening and closing of a poppet valve and includes a motor and a transmission mechanism that transmits a drive force of the motor to the poppet valve. The transmission mechanism includes a booster mechanism. The booster mechanism is a three-dimensional toggle mechanism that includes a cylinder, an input disc that rotates about an axis in the cylinder, an output disc that reciprocates along an axial direction in the cylinder, and a link that connects the input disc and the output disc.Type: ApplicationFiled: April 30, 2018Publication date: August 30, 2018Applicant: IHI CorporationInventors: Kohei TAYA, Hatsuo MORI, Kenji HIRAI, Yu HIRATA, Masahiro TANAKA, Takeshi TAKAKI
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Patent number: 9989012Abstract: Provided is a vapor jetting device including: a box-shaped casing; a propellant holding unit that is placed in the casing and forms a space for holding a propellant; a gas storing unit that is placed in the casing, forms a space that is divided from the propellant holding unit by a partition wall including a communication hole, and stores gas; a machine housing unit that is placed in the casing, forms a space that is divided from the propellant holding unit and the gas storing unit by partition walls, and houses machines; a nozzle that is connected to the casing and ejects the gas to an outside; a gas flow path that is formed in the casing and supplies the gas stored in the gas storing unit to the nozzle; and a heater that is placed in the casing and heats at least the gas storing unit.Type: GrantFiled: February 9, 2015Date of Patent: June 5, 2018Assignee: IHI CORPORATIONInventors: Taku Izumiyama, Hatsuo Mori, Kozue Hashimoto, Toru Nagao
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Publication number: 20170328811Abstract: An abnormality diagnosing method includes a model generation step of generating a simulation model of a monitoring target, an operation start step of starting an operation of the monitoring target, a measurement step of measuring an internal state quantity in the operating state of the monitoring target and extracting a measured value, a prediction step of inputting into the simulation model same control input value used in the operating state of the monitoring target and calculating a predicted value of the internal state quantity of the monitoring target, a Mahalanobis distance calculation step of calculating a Mahalanobis distance from a difference between the measured value and the predicted value, and an abnormality diagnosis step of diagnosing whether the operating state of the monitoring target is abnormal based on the Mahalanobis distance.Type: ApplicationFiled: July 31, 2017Publication date: November 16, 2017Applicant: IHI CorporationInventors: Hatsuo MORI, Noriyoshi Mizukoshi, Takashi Ogai, Yusuke Maru, Takayuki Yamamoto, Shinsuke Takeuchi, Satoshi Nonaka, Tsuyoshi Yagishita
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Publication number: 20170113818Abstract: A debris removal device includes: an end mass adapted to approach debris to be removed; a debris capture device separably-mounted on the end mass; and a tether connecting the debris capture device and the end mass to each other. The debris capture device includes a harpoon adapted to penetrate into the debris, a shooting device adapted to shoot the harpoon, a guide member positioned to come into contact with the surface of the debris to adjust the shooting angle of the harpoon with respect to the surface of the debris, and a switch that sends the shooting signal to the shooting device. When the harpoon is penetrated into the debris, the end mass is separated from the debris capture device, and the tether is released into outer space.Type: ApplicationFiled: January 3, 2017Publication date: April 27, 2017Applicant: IHI CorporationInventors: Hatsuo MORI, Taku IZUMIYAMA, Kozue HASHIMOTO, Satomi KAWAMOTO, Keiichi HIRAKO
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Publication number: 20170097103Abstract: Provided is a pneumatic valve in which a seal member; a shaft provided with a valve body capable of abutting against the seal member; and a valve-actuating pressure chamber that moves the shaft in an axial direction to actuate the valve body is provided within a valve casing. The shaft has a first member that receives pressure from the valve-actuating pressure chamber, and a second member that includes the valve body and is movable relative to the first member in the axial direction. The pneumatic valve further has a stopper that is provided in a movement path of the first member, and a disc spring that is sandwiched between the first member and the second member, has elastic energy accumulated therein in a state where the first member is in contact with the stopper, and presses the valve body against the seal member.Type: ApplicationFiled: December 2, 2016Publication date: April 6, 2017Applicant: IHI CorporationInventors: Kohei TAYA, Hatsuo MORI
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Publication number: 20170030476Abstract: A pneumatically-actuated valve is provided in which a spring member that applies an axial force to a shaft connected to a valve body, in an axial direction of the shaft, and a valve-actuating pressure chamber that actuates the valve body by applying a force resisting the axial force to the shaft are provided inside a valve casing. The pneumatically-actuated valve includes an axial-force adjusting device that adjusts the magnitude of energy stored in the spring member, via a surface-pressure adjusting screw provided to be inserted through the valve casing, from the outside of the valve casing.Type: ApplicationFiled: October 17, 2016Publication date: February 2, 2017Applicant: IHI CorporationInventors: Kohei TAYA, Hatsuo MORI, Tomoharu ODA, Masanori SUZUKI
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Publication number: 20150152812Abstract: Provided is a vapor jetting device including: a box-shaped casing; a propellant holding unit that is placed in the casing and forms a space for holding a propellant; a gas storing unit that is placed in the casing, forms a space that is divided from the propellant holding unit by a partition wall including a communication hole, and stores gas; a machine housing unit that is placed in the casing, forms a space that is divided from the propellant holding unit and the gas storing unit by partition walls, and houses machines; a nozzle that is connected to the casing and ejects the gas to an outside; a gas flow path that is formed in the casing and supplies the gas stored in the gas storing unit to the nozzle; and a heater that is placed in the casing and heats at least the gas storing unit.Type: ApplicationFiled: February 9, 2015Publication date: June 4, 2015Applicants: IHI AEROSPACE CO., LTD., IHI CORPORATIONInventors: Taku IZUMIYAMA, Hatsuo MORI, Kozue HASHIMOTO, Toru NAGAO
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Patent number: 8943795Abstract: Disclosed is a turbo pump in which a pump impeller is connected to one end of a rotary shaft and a turbine is connected to the other end of the rotary shaft. The turbo pump is designed such that an equivalent region, between a turbine efficiency curve obtained on the basis of a conditional expression where the number of rotations of the rotary shaft is maintained constant regardless of a pump flow rate and a turbine efficiency curve of an actual machine, becomes an operation region.Type: GrantFiled: September 3, 2010Date of Patent: February 3, 2015Assignees: IHI Corporation, Japan Aerospace Exploration AgencyInventors: Hatsuo Mori, Yoshihiro Naruo, Shinichiro Tokudome, Tsuyoshi Yagishita, Takayuki Yamamoto, Yoshifumi Inatani