Abstract: The azimuth/attitude angle measuring device (100) includes a first angular velocity sensor (103), a second angular velocity sensor (104), a power supply unit (102), and a control unit (101). The control unit is configured so that, when an angular velocity, which is to be used in an operation before and after interchanging a function of a primary side control circuit (12) and a function of a secondary side control circuit (13), is detected by one of the first angular velocity sensor and the second angular velocity sensor, the control unit does not perform control for interchanging the function of the primary side control circuit and the function of the secondary side control circuit in the other of the first angular velocity sensor and the second angular velocity sensor.

Abstract: A vibration-type angular velocity sensor (100) includes a primary side control circuit (2) and a secondary side control circuit (3) which are configured so that a function as the primary side control circuit (2) and a function as the secondary side control circuit (3) are interchangeable, in which an offset value after interchange and an offset value before interchange are symmetric values with respect to a predetermined reference value.

Abstract: A heat exchanger (1) includes a heat exchanger (1) including a separate plate (10) and a first flow path (11) which is divided by a plurality of fin portions (13a) and through which air flows, a fan (2), and a control unit (3) that performs control for switching between a first mode where heat exchange is performed by forcing air to flow in and a second mode where heat exchange is performed by natural convection, the plurality of fin portions (13a) are disposed in parallel at predetermined intervals (p1), and are formed to have an undulating shape from one end (11b) toward the other end (11c) of the first flow path (11) in a width direction of the first flow path (11), and the first flow path (11) is configured to be used in both the first mode and the second mode.

Abstract: A heat exchanger (100) includes a flow path layer (10) in which a first flow path (11) extending in a first direction and a second flow path (12) extending in a second direction are disposed in the same layer. In each of the first flow path and the second flow path, a flow path cross-sectional area is reduced and expanded along an extending direction of the flow path. The first flow path and the second flow path intersect each other in the same layer in first portions (23, 33) of which the flow path cross-sectional area is reduced, due to displacement of the first portions (23, 33) in a third direction.

Abstract: A heat exchanger (100) for an aircraft engine includes a core (1) and radiating fins (2). The radiating fins are configured such that a ratio y/Y of a height y from a surface (10) of the core to a formation position of a connecting portion (23) to a total height Y of each of the radiating fins (2) from the surface of the core satisfies a relationship of 0.34<y/Y<0.64.

Abstract: An object of the present invention is to provide a diffusion bonding heat exchanger with which it is possible to reduce a thermal stress that is generated due to heat exchange between fluids significantly different from each other in temperature even in a case where the number of stacked heat transfer plates is made large. A diffusion bonding heat exchanger (100) includes a core (1) in which a plurality of heat transfer plates (HP) are stacked and diffusion-bonded to each other. The core includes a plurality of flow path blocks (40) each of which is configured to include a plurality of flow path layers (30) and a partition wall layer (50) that divides the plurality of flow path blocks. A thickness (t3) of the partition wall layer in a stacking direction is larger than an interval (t2) between flow paths arranged in the stacking direction.

Abstract: A vibration-type angular velocity sensor (100) includes a first angular velocity sensor unit (101) and a second angular velocity sensor unit (102). In a predetermined period, the second angular velocity sensor unit performs a process of detecting an angular velocity based on secondary vibration of a vibrator (11) by a secondary side control circuit (17) and a process of detecting the angular velocity based on the secondary vibration of the vibrator by the primary side control circuit (16) by interchanging functions. The first angular velocity sensor unit detects the angular velocity in the predetermined period. The bias component of the first angular velocity sensor unit is calculated based on a first detection result detected by the first angular velocity sensor unit in the predetermined period and a second detection result detected by the second angular velocity sensor unit in the predetermined period.

Abstract: An azimuth/attitude angle measuring device (100) includes an angular velocity sensor (103a) and a control unit (101). The angular velocity sensor includes a vibrator (11), a primary side control circuit (12), and a secondary side control circuit (13). The control unit is configured to perform control for switching a state of the angular velocity sensor between a first state in which the angular velocity is detected by interchanging a function of the primary side control circuit and a function of the secondary side control circuit and a se cond state in which the angular velocity is detected without the function of the primary side control circuit and the function of the secondary side control circuit being interchanged.

Abstract: A heat sink includes a plurality of extrusions each including a base and a fin, the plurality of extrusions being aligned in a width direction orthogonal to an extrusion direction and joined to each other. The plurality of extrusions include a first extrusion including a plurality of fins, the first extrusion including, in the base, a through-hole in which a heat pipe is mountable, the through-hole extending in the extrusion direction.

Abstract: A heat exchanger (100) includes a plurality of flow paths (10) each having a tubular shape, the plurality of flow paths including a plurality of first flow paths (11) configured to allow a first fluid (3) to flow therethrough and a plurality of second flow paths (12) configured to allow a second fluid (4) to flow therethrough. The plurality of flow paths extend in a predetermined direction as a whole. A position and an outer shape of each of the plurality of flow paths in a cross-section (CS) orthogonal to the predetermined direction vary according to a position of the each of the plurality of flow paths in the predetermined direction.

Abstract: A diffusion bonding heat exchanger includes a first heat transfer plate and a second heat transfer plate. A high-temperature flow path of the first heat transfer plate includes a connection channel portion configured such that a high-temperature fluid can flow across a plurality of channels within at least a range that overlaps a predetermined range in a stacking direction, the predetermined range being a range from a flow path inlet of the second heat transfer plate to a position downstream of the flow path inlet.

Abstract: A boiling cooler includes a boiling part, a condensing part arranged in a substantially horizontal direction with respect to the boiling part, and a connecting pipe that connects the boiling part to the condensing part. The condensing part includes a plurality of stages of refrigerant passages, a first external passage provided between the refrigerant passages, and a second external passage provided on an outer surface of at least one of an uppermost refrigerant passage and a lowermost refrigerant passage.

Abstract: An angular rate sensor includes an annular resonator. The resonator includes an annular base material made of a first material, and an annular first low thermal conductor made of a second material having a lower thermal conductivity than the first material, the first low thermal conductor being sandwiched between an annular first region and an annular second region on an inner side of the first region in the base material over substantially an entire circumference of the resonator.

Abstract: A cooling device includes a main body unit that has, on a surface thereof, a plurality of disposition regions where objects to be cooled are disposed, and a refrigerant flow passage provided in the main body unit. The refrigerant flow passage includes a first flow passage portion and a second flow passage portion. The first flow passage portion is formed at a predetermined position of overlapping a part of an inside of a predetermined disposition region to allow a refrigerant to pass therethrough more intensively than the second flow passage portion.

Abstract: This piezoelectric element includes a lower electrode formed on a substrate, a piezoelectric layer formed on the lower electrode, and an upper electrode formed on the piezoelectric layer. The upper electrode includes a first upper electrode layer made of a metal oxide including an amorphous portion at least at a boundary with the piezoelectric layer and a second upper electrode layer formed on the first upper electrode layer.

Abstract: This accelerometer (100) includes a substrate (30) and a bonding member (90) that bonds the substrate (30) and a supporting member (50) to each other, and the bonding member (90) is arranged in a region (R3) that straddles a first region (R1) in which a first sensor element (11) is arranged and a second region (R2) in which a second sensor element (12) is arranged in a plan view.

Abstract: An ozone gas generator includes a first electrode portion that includes a first electrode, and a second electrode portion that faces the first electrode portion, is disposed with a predetermined interval at which discharge between the first electrode portion and the second electrode portion is possible, and includes a second electrode, in which at least one of the first electrode portion and the second electrode portion includes a dielectric that is provided on a surface of the first electrode or the second electrode on sides facing each other, and at least one of the first electrode portion and the second electrode portion includes a layer that is provided on at least a portion of the surface of the first electrode or the second electrode on the sides facing each other, or the dielectric, and includes at least one of a metal or a metal compound, and the first electrode portion and the second electrode portion are configured such that accuracy of an interval between surfaces facing each other is ±3% or more a

Abstract: A heat exchanger includes a first flow path through which a first fluid flows, a second flow path through which a second fluid flows, and an adjustment layer disposed between the first flow path and the second flow path adjacent to each other and that adjusts an amount of heat exchange between the first flow path and the second flow path. The adjustment layer includes a first portion and a second portion having a heat transfer performance lower than that of the first portion, and has a heat transfer performance varied depending on a position in the adjustment layer.

Abstract: In a vibrating structure angular rate sensor, a signal generator generates a phase change suppressing signal in which a phase change according to an amplitude of a rectangular wave signal generated by at least one of a first modulator and a second modulator is suppressed.

Abstract: A cooling device includes a main body unit that has, on a surface thereof, a plurality of disposition regions where objects to be cooled are disposed, and a refrigerant flow passage provided in the main body unit. The refrigerant flow passage includes a first flow passage portion and a second flow passage portion. The first flow passage portion is formed at a predetermined position of overlapping a part of an inside of a predetermined disposition region to allow a refrigerant to pass therethrough more intensively than the second flow passage portion.