Abstract: A method for designing the cross-sectional shape of the fuselage of a flying body having the fuselage extending in the roll axial direction, the section being taken on a plane perpendicular to the roll axial direction. This method is provided with: an initial setting step S12 for setting an initial cross-sectional shape, which is the initial cross-sectional shape of the fuselage having a cross-sectional shape that is not truly circular; load application steps S14, S21, S28 for analytically or experimentally preloading the fuselage having the initial cross-sectional shape; and a design shape setting step S17 for acquiring the cross-sectional shape of the preloaded fuselage as the design cross-sectional shape of the fuselage.

Abstract: A block for dental prostheses is in the form of a column or a board, a main crystalline phase of the block being of lithium disilicate, and when the block is observed in a field of view of a partially enlarged cross section of the block, the proportion of the total area of crystals having a length of at least 0.5 ?m, the crystals appearing in the field of view, to an area of the field of view is at most 21%.

Abstract: A processing machine and a method of using the processing machine to process a block to form a dental prosthesis is provided. The processing machine includes a polishing jig. The polishing jig is for machining tools which makes it possible for a deteriorating machining tool to be used again without detaching the machining tool, with which the processing machine is equipped, from the processing machine. The polishing jig for machining tools comprises an attachment part to be attached to the processing machine; and a polishing face that is at least part of a surface of the polishing jig, the polishing face adapted to polish a processing part of a machining tool.

Abstract: A rotary machine includes a rotor shaft that is rotatable about an axis, a plurality of blades extending radially outward from the rotor shaft and arranged in a circumferential direction, and a casing that covers the rotor shaft and the plurality of blades from an outer peripheral side. Each of the plurality of blades includes a blade body including a leading edge facing forward in a rotational direction of the rotor shaft, a trailing edge facing backward, and a tip facing radially outward, and a weight of the blade body is different between at least two of the plurality of blades.

Abstract: A rotary machine includes a rotary shaft configured to rotate around an axis and a blade row including a plurality of blades at intervals in a circumferential direction of the axis. Each of the blades includes a fiber laminate obtained by laminating a plurality of fiber sheets and a resin used for forming an outer shape of the blade by impregnating the fiber laminate. At least two of the blades in the blade row have fiber laminates having different structures.

Abstract: A method for designing the cross-sectional shape of the fuselage of a flying body having the fuselage extending in the roll axial direction, the section being taken on a plane perpendicular to the roll axial direction. This method is provided with: an initial setting step S12 for setting an initial cross-sectional shape, which is the initial cross-sectional shape of the fuselage having a cross-sectional shape that is not truly circular; load application steps S14, S21, S28 for analytically or experimentally preloading the fuselage having the initial cross-sectional shape; and a design shape setting step S17 for acquiring the cross-sectional shape of the preloaded fuselage as the design cross-sectional shape of the fuselage.

Abstract: A polishing jig for machining tools which makes it possible for a deteriorating machining tool to be used again without detaching the machining tool, with which a processing machine is quipped, from the processing machine is provided. The polishing jig for machining tools comprises an attachment part to be attached to a processing machine; and a polishing face that is at least part of a surface of the polishing jig, the polishing face adapted to polish a processing part of a machining tool.