Abstract: An expansion pipe joint that absorbs displacement occurring at a connection portion between an upstream pipe and a downstream pipe includes an outer tube having a downstream end coupled to the downstream pipe, an inner tube that is inserted into the outer tube and has an upstream end coupled to the upstream pipe, and a closing member having elasticity that is provided between an upstream end of the outer tube and the upstream end of the inner tube so as to close a gap between them. Then, a difference between a position in an axial direction of the upstream end of the outer tube and a position in the axial direction of the upstream end of the inner tube is within a predetermined range so that a bus line of the closing member is inclined from the axial direction.

Abstract: A VR training system includes: a training terminal that generates a simulation image for simulation training in VR space and includes an avatar of a trainee linked to action of the trainee in real space and a controller with which the trainee performs an omission action. When an omission action is performed with the controller in a series of actions in the simulation training, the training terminal omits a predetermined action of the avatar and updates the simulation image from a state before the predetermined action to a state after the predetermined action.

Abstract: An aircraft VR training system includes: training terminals that generates simulation images for performing simulation training in common VR space and provides the simulation images to trainees individually associated with the training terminals; and a setting terminal including setting information necessary for generating the simulation images. The setting terminal transmits the setting information to the training terminals. The training terminals set the setting information received from the setting terminal, and transmit setting completion notification of the setting information to the setting terminal. After the setting terminal receives the completion notification from all the training terminals, the setting terminal causes the training terminals to start simulation training.

Abstract: A core according to one aspect of the present disclosure is a core that is inserted into a space between a skin and a stringer in a step of integrally molding the skin and the stringer, the skin including fiber-reinforced resin, the stringer having a hat-shaped section that is open toward the skin. The core includes: a first die that extends along a longitudinal direction of the stringer and contacts the skin; and a second die that extends along the longitudinal direction of the stringer and is located at an opposite side of the skin across the first die. The second die includes a material that is softer than the first die. The second die includes a slit perpendicular to the longitudinal direction of the stringer.

Abstract: A simulator includes a control stick including a first rotatable control shaft and a second rotatable control shaft; a first reaction force generator including a spring that generates a reaction force to an operation of the first control shaft; a second reaction force generator including a spring that generates a reaction force to an operation of the second control shaft; a motor that displaces the spring to change a neutral position of the first control shaft; and a motor that displaces the spring to change a neutral position of the second control shaft. An output shaft of the motor is located below the first reaction force generator, and an output shaft of the motor is located above the second reaction force generator.

Abstract: A method for operating a double-action friction stir welding device including a welding tool having a pin member and a shoulder member, a projection/retraction mechanism for causing the pin member to project/retract relative to the shoulder member, a rotation mechanism for rotating a welding tool, and an advancing/retracting mechanism for advancing/retracting the welding tool, the method including cleaning at least one of the outer circumferential surface of the pin member and the inner circumferential surface of a through hole of the shoulder member on the basis of the level of an adhesion parameter correlated with the degree of adhesion of the material of a welding object, caused by friction stir welding, on the outer circumferential surface of the pin member and the inner circumferential surface of the through hole of the shoulder member.

Abstract: A substrate holding hand includes a supporting plate where a circular reference capture range is defined, a plurality of pads disposed within the reference capture range, at least one stationary stopper that is disposed along an outer circumferential circle of the reference capture range, at least one movable stopper having a part at the same height from the supporting plate as the stationary stopper, and a stopper actuator that moves the movable stopper from a retracted position outside the reference capture range to a deployed position closer to the stationary stopper than the retracted position. A circular reduced capture range is defined by the movable stopper at the deployed position, and the front stopper, and a diameter of the reduced capture range is larger than a diameter of the substrate and smaller than a diameter of the reference capture range.

Abstract: An insertion quality determinator is a determinator 1 that determines a quality of insertion of an insertion component 5 inserted into a hole formed in a work object. The insertion component 5 at least includes a head having the size that is impossible to be inserted into the hole, and a pillar-shaped body that extends from the head and has the thickness that is possible to be inserted into the hole. The determinator is configured to determine the quality of insertion based on positions of given parts P1-P4 of the head of the insertion component 5 inserted into the hole, in a direction perpendicular to an extending direction of the hole.

Abstract: A gas turbine engine including a compressor that compresses air taken in; a combustor that sprays a fuel into the compressed air and combusts the fuel; a turbine rotated by energy of the combustion gas generated by the combustor; a rotating shaft coupling the compressor and the turbine; a rear bearing that is a cageless ball bearing including an inner race, an outer race, and a ball, the inner race being fixed to a portion of the rotating shaft which portion is close to the turbine; a housing to which the rear bearing is attached; and a rear bearing holding member that is interposed between the rear bearing and the housing and holds the outer race of the rear bearing such that the outer race of the rear bearing is movable in an axial direction relative to the housing.

Abstract: A transmission device includes a casing accommodating a transmission gear and having an oil sump for retaining oil. The oil in the oil sump flows from a lubrication pump through a lubrication passage and is injected to the transmission gear. A connection portion is provided in a part of the lubrication passage, which part is disposed outside the casing. A direction control valve is provided downstream of the lubrication pump and upstream of the connection portion in the lubrication passage with respect to a flow direction of the oil. The direction control valve is configured to open the lubrication passage when a hydraulic pressure in the lubrication passage exceeds a predetermined value and to close the lubrication passage when the hydraulic pressure is equal to or lower than the predetermined value.

Abstract: A small planing watercraft includes: a body; a seat located above the body; a steering handle located above the body and forward of the seat; and an additional part holding mount secured to the handle and disposed forward of a rear surface of the handle.

Abstract: A small planing watercraft includes: a travel electrical component driven for travel of the small planing watercraft; an accessory electrical component provided separately from the travel electrical component; a battery supplying power to the travel electrical component and the accessory electrical component; a sensor detecting a physical quantity corresponding to a level of the battery; and processing circuitry determining, based on a result of detection of the sensor, whether the level of the battery is a predetermined power saving level, and controlling, when it is determined that the level of the battery is the power saving level, operation of the accessory electrical component so that power consumed by the accessory electrical component is less than that before determination.

Abstract: A robot system including a robot, a marker unit, a sensor, storage device, and a control device. The robot performs an operation with regard to a workpiece. The marker unit is attached to a measurement object and includes a base section and a plurality of markers attached to the base section. The sensor detects identification information and three-dimensional positions of the plurality of markers. The storage device stores teaching data including operation data and attachment position data indicating a correspondence relationship between the identification information of each of the markers and an attachment position of the corresponding marker. The control device calculates a three-dimensional position of the measurement object based on the three-dimensional positions of the plurality of markers and the attachment position data and controls the robot based on the three-dimensional position of the measurement object and the operation data so as to make the robot perform the operation.

Abstract: A deflection amount estimating device is provided for estimating an amount of deflection of a four-bar linkage structure part of a robotic arm. The four-bar linkage structure part swings in a given angle range. The deflection amount estimating device comprises processing circuitry configured to calculate a swing angle of the four-bar linkage structure part; calculate a load received by the four-bar linkage structure part, determine a stiffness value, corresponding to the swing angle of the four-bar linkage structure part, based on a stiffness-value determining function indicating a correlation between the stiffness value and the swing angle of the four-bar linkage structure part, the stiffness value indicating a value of each element in a stiffness matrix associating the load with the amount of deflection of the four-bar linkage structure part; and calculate the amount of deflection of the four-bar linkage structure part based on the load and the stiffness matrix.

Abstract: The robot system includes a robot having a robot body and a robot controller configured to control operation of the robot body, and an unmanned aerial vehicle capable of autonomous flight. The unmanned aerial vehicle acquires at least one of image pick-up data of a work of the robot body and positional information of a work object of the robot body, and transmits at least one of the image pick-up data and the positional information to the robot controller. The robot controller receives at least one of the image pick-up data and the positional information of the work object, and controls the operation of the robot body by using at least one of the image pick-up data and the positional information of the work object.

Abstract: A fluid loading joint includes: a first half provided at an end of a first vacuum double pipe, the first half including a first inner pipe, a first outer pipe, and a first blocking member blocking between the first inner pipe and the first outer pipe; a second half provided at an end of a second vacuum double pipe, the second half including a second inner pipe, a second outer pipe, and a second blocking member blocking between the second inner pipe and the second outer pipe; an annular inner insulator interposed between the first inner pipe and the second inner pipe; and an annular outer insulator interposed between the first outer pipe and the second outer pipe, the outer insulator surrounding the inner insulator, with a gas space positioned between the outer insulator and the inner insulator, the gas space being formed between the first blocking member and the second blocking member.

Abstract: A hydrogen/oxygen stoichiometric combustion turbine system includes: a high-pressure steam turbine (2); a low-pressure steam turbine (3); and a heater (5) disposed between the high-pressure and low-pressure steam turbines. The heater (5) has a combustion portion (53) in which stoichiometric combustion of hydrogen and oxygen is caused, and a mixing portion (55) configured to mix discharged steam (S4) from the high-pressure steam turbine (2) with combustion gas (R) from the combustion portion (53) and to supply the obtained product to the low-pressure steam turbine (3).

Abstract: A fluid loading joint for rotatably connecting double pipes to each other includes: a first half including a first inner pipe, a first outer pipe, and a holder, the first inner pipe being provided with a first flange, the first outer pipe accommodating the first inner pipe therein, the holder holding the first outer pipe such that the first outer pipe is rotatable; a second half including a sliding surface facing the first flange, the second half including a second inner pipe and a second outer pipe, the second inner pipe being provided with a second flange, the second outer pipe accommodating the second inner pipe therein and being provided with an outer flange that is fastened to the holder; an inner sealing member and an outer sealing member that are disposed between the first flange and the sliding surface; an inner passage provided in the second flange, the inner passage leading a leaked fluid from between the inner sealing member and the outer sealing member to an outer circumferential surface of the se

Abstract: A robot 100 includes a base 1 having side portions, an arm 3 rotatably coupled to the base 1, and a hand 8 coupled to the arm 3. A joint between the arm 3 and the base 1 is closest to a first side portion 11a in a plan view. The base 1 houses control components. A second side portion 11b is provided with a maintenance area 12 on which a maintenance component such as a first board 24 is disposed. The maintenance area 12 is used for maintenance of the maintenance component.

Abstract: In a flange cooling structure of a gas turbine engine, one of a first flange and a second flange is a high pressure flange that faces a first region, and the other of the first flange and the second flange is a low pressure flange that faces a second region. A contact surface of the high pressure flange or a contact surface of the low pressure flange includes a cooling groove that communicates with the first region and the second region.