Abstract: [Object] To provide a rotary wing aircraft capable of self-leveling and ensuring a stable landing state. [Solution] The rotary wing aircraft according to the present disclosure comprises a plurality of rotary blades, an arm part for supporting the plurality of rotary blades, a mounting part for mounting an object, and a connecting part for connecting the mounting part to the arm part in a state where the mounting part is movable within a predetermined range. The position of the connecting part of the rotary wing aircraft of the present disclosure is above the center of gravity of the arm part. Thereby, self-leveling is made possible and a stable landing state can be ensured.

Abstract: A high-place observation device for stably performing a fixed-point observation of a target object from a high place is provided. The high-place observation device provides a long pole which is formed to extend and contract freely and which stands on the installation surface, a rotorcraft for positioning the pole to a desirable height position by extending and contracting the pole by a floating force in a connected state, a winding mechanism which fixes and maintains the height position of the pole to the height position set by the rotorcraft, and a camera attached to the rotorcraft.

Abstract: A delivery rotary-wing aircraft has a plurality of rotary wings, a central portion to which a plurality of arms for supporting the rotary wings are connected, a first mounting portion for loading a package, a second mounting portion which is located on the opposite side to the first mounting portion as viewed from the central portion, a first supporting member for coupling the first mounting portion with the central portion, and a connection portion between the central portion and the first supporting member. The center point of lift occurring in the rotary-wing aircraft with the rotation of the plurality of rotary wings and the center point of gravity of the rotary-wing aircraft coincide with the center point of the connection portion. The first supporting member is equipped with an adjustment mechanism for vertically downwardly extending the length of the first supporting member.

Abstract: [Problem] To provide an aerial vehicle wherein the flight efficiency can be improved. [Solution] An aerial vehicle according to the present invention relates in particular to a aerial vehicle having a loading section whereon a payload and the like can be loaded. The aerial vehicle is capable of traveling at least forward and backward, is provided with lift generation sections, arm sections for holding the lift generation sections, a loading section disposed on the arm sections and positioned posterior to the center of gravity of the aerial vehicle, and a maintaining means for maintaining the aerial vehicle at least in the horizontal attitude, and the loading section has a first connection part for maintaining a loaded object at least in the horizontal attitude. On the basis of the above mentioned, the payload can be prevented from entering slipstream regions created by propellers, improving flight efficiency.

Abstract: [Object] To provide a high-place observation device for stably performing a fixed-point observation of a target object from a high place. [Solution] Provides a long pole 30 which is formed to extend and contract freely and which stands on the installation surface E, a rotorcraft 40 for positioning the pole 30 to a desirable height position by extending and contracting the pole 30 by a floating force in a connected state, a winding mechanism 22 which fixes and maintains the height position of the pole 30 to the height position set by the rotorcraft 40, and a camera 50 attached to the rotorcraft 40.

Abstract: A center C of a connecting portion coincides with a center U of lift generated in a body of a rotary-wing aircraft. The center C of the connecting portion is a point of action of gravitational force of a support rod and a first mounting portion with respect to the connecting portion. The center U of the lift is a point of action of the lift on the rotary-wing aircraft and is the center of rotation of the connecting portion.