Abstract: [Object] To provide a technology capable of improving propulsion efficiency in a BLI propulsion technology. [Solving Means] An aircraft according to the present technology includes: a fuselage section; and a BLI propulsion section. The fuselage section has a cylindrical shape that is long in an axial direction and short in a width direction and a vertical direction, and includes a rear end portion on a rear side in the axial direction. The BLI propulsion section is a BLI propulsion section that is provided on a rear side of the fuselage section and includes an intake port, a center position of the intake port being offset from a center position of the rear end portion in at least one of the vertical direction or the width direction.

Abstract: A leading-edge high-lift device according to an embodiment of the present invention is a leading-edge high-lift device that is deployable and retractable from/into a fixed leading edge of a main wing of an aircraft and includes: a leading edge portion; a trailing edge portion that forms a gap between a trailing edge portion and the main wing during deployment; a cusp portion formed at a lower edge of the leading edge portion; a lower surface portion formed between the cusp portion and the trailing edge portion; and a curved hump portion that is locally provided on a surface of the lower surface portion and protrudes toward the main wing in a cross-sectional shape perpendicular to a wing span direction of the main wing.

Abstract: A noise reduction apparatus, an aircraft, and a noise reduction method capable of increasing the amount of noise reduction are provided. The noise reduction apparatus 1 includes a porous plate 2 disposed to face a fluid flow, the porous plate 2 including a bend region 5 bent toward an upstream side of the fluid flow. The bend region 5 is provided at the end portion 6 of the porous plate 2, and has a concave R-shape on an upstream side of the fluid flow.

Abstract: [Object] To provide a noise reduction apparatus, an aircraft, and a noise reduction method capable of increasing the amount of noise reduction. [Solving Means] The noise reduction apparatus 1 includes a porous plate 2 disposed to face a fluid flow, the porous plate 2 including a bend region 5 bent toward an upstream side of the fluid flow. The bend region 5 is provided at the end portion 6 of the porous plate 2, and has a concave R-shape on an upstream side of the fluid flow. Although the direction of the fluid flow is typically deflected toward the outside from the center of the porous plate 2 due to the porous plate 2, the deflected fluid easily passes through the porous plate 2 since the porous plate has the bend region 5. Thus, the shear layer of the fluid flow is weakened, the noise induced by the vortex is reduced, and it is possible to increase the reduction amount of noise.

Abstract: A pressure measure sheet having a sheet shape and having a pressure measure surface, the pressure measure sheet being adapted to be arranged on a surface of a measured object, includes: a plurality of pressure measure ports provided through the pressure measure surface; at least one connection port adapted to be connected to a side of a pressure measure device; and a coupler part including a plurality of through-tubes penetrating the plurality of pressure measure ports and the at least one connection port, in which the pressure measure sheet includes a region in which the plurality of through-tubes are arrayed in nonparallel.

Abstract: A pressure measure sheet having a sheet shape and having a pressure measure surface, the pressure measure sheet being adapted to be arranged on a surface of a measured object, includes: a plurality of pressure measure ports provided through the pressure measure surface; at least one connection port adapted to be connected to a side of a pressure measure device; and a coupler part including a plurality of through-tubes penetrating the plurality of pressure measure ports and the at least one connection port, in which the pressure measure sheet includes a region in which the plurality of through-tubes are arrayed in nonparallel.

Abstract: In a high-lift-device, a wing, and noise reduction device for a high-lift-device that are capable of reducing noise generated when a flap is extended, preventing deterioration of aerodynamics characteristic when retracting the flap, and preventing an increase in weight, a flap main body (5) disposed so as to be extendable/retractable relative to a main wing and a protruding portion (6A-1) that smoothly protrudes at least at the vicinity of one end portion of a positive-pressure surface (PS) of the flap main body (5) in a direction away from the flap main body (5) are provided.