Abstract: A temperature-controlled fluid circulation apparatus includes a flow path through which a fluid controlled by a temperature control unit is circulated via a fluid supply target; a three-way valve in the flow path downstream of the fluid supply target and upstream of a temperature control position by the temperature control unit, a part between two out of three ports constituting a part of the flow path; and a bypass flow path branching from the flow path downstream of the temperature control position by the temperature control unit and upstream of the fluid supply target, to be connected to one remaining port out of the three ports of the three-way valve. A pressure of the fluid flowing through the flow path at a position that is downstream of the fluid supply target and upstream of the three-way valve is detected by a pressure sensor.

Abstract: A honeycomb panel 1 includes: a honeycomb core 10 having a front surface 10A and a rear surface 10B; and a first plate member 11 provided on the front surface 10A of the honeycomb core 10; a first flange part 111 projecting inside a cell 10S is provided on an end edge of trapezoidal portions 101, 102 of one or more core strips 100 forming the honeycomb core 10, the end edge being positioned on the side of the first plate member 11. The first plate member 11 has one or more through-holes 121 overlapped with the first flange part 111, and is joined to the honeycomb core 10 by welding an outer surface of the first flange part 111, which faces outside through the through-hole 121, and an inner circumferential surface of the through-hole 121.