An unmanned aerial vehicle including a body part having an inner space filled with light gas; and a plurality of wing parts mounted on the body part and providing a propelling force. Each of the wing parts includes a fin part having a first rib and a second rib, a first servomotor and a second servomotor connected to one end of the first rib and one end of the second rib, respectively, to move the other end of the first rib and the other end of the second rib in a control angle range; a control unit for controlling the first servomotor and the second servomotor to make the first rib and the second rib move while having a particular phase difference therebetween; and a third servomotor connected to the first servomotor and the second servomotor to rotate the fin part to determine the propelling direction of the body part.

An unmanned aerial vehicle including a body part having an inner space filled with light gas; and a plurality of wing parts mounted on the body part and providing a propelling force. Each of the wing parts includes a fin part having a first rib and a second rib, a first servomotor and a second servomotor connected to one end of the first rib and one end of the second rib, respectively, to move the other end of the first rib and the other end of the second rib in a control angle range; a control unit for controlling the first servomotor and the second servomotor to make the first rib and the second rib move while having a particular phase difference therebetween; and a third servomotor connected to the first servomotor and the second servomotor to rotate the fin part to determine the propelling direction of the body part.

A buoyant aerial vehicle includes: a balloon configured to store a gas; a payload coupled to the balloon; and a propulsion unit coupled to the payload by a tether. The propulsion unit includes: a fuselage having a substantially longitudinal shape, a first end, and a second end; a primary airfoil coupled to the fuselage; a secondary airfoil coupled to the fuselage at one of the first end or the second end; and a thrust generating device disposed at one of the first end or the second end and configured to move the propulsion unit relative to the payload along a propulsion flight path. The movement of the propulsion unit imparts movement of the buoyant aerial vehicle along a vehicle flight path.

A buoyant aerial vehicle includes: a balloon configured to store a gas; a payload coupled to the balloon; and a propulsion unit coupled to the payload by a tether. The propulsion unit includes: a fuselage having a substantially longitudinal shape, a first end, and a second end; a primary airfoil coupled to the fuselage; a secondary airfoil coupled to the fuselage at one of the first end or the second end; and a thrust generating device disposed at one of the first end or the second end and configured to move the propulsion unit relative to the payload along a propulsion flight path. The movement of the propulsion unit imparts movement of the buoyant aerial vehicle along a vehicle flight path.

A buoyant aerial vehicle includes: a balloon configured to store a gas; a payload coupled to the balloon; and a propulsion unit coupled to the payload by a tether. The propulsion unit includes: a fuselage having a substantially longitudinal shape, a first end, and a second end; a primary airfoil coupled to the fuselage; a secondary airfoil coupled to the fuselage at one of the first end or the second end; and a thrust generating device disposed at one of the first end or the second end and configured to move the propulsion unit relative to the payload along a propulsion flight path. The movement of the propulsion unit imparts movement of the buoyant aerial vehicle along a vehicle flight path.

A buoyant aerial vehicle includes: a balloon configured to store a gas; a payload coupled to the balloon; and a propulsion unit coupled to the payload by a tether. The propulsion unit includes: a fuselage having a substantially longitudinal shape, a first end, and a second end; a primary airfoil coupled to the fuselage; a secondary airfoil coupled to the fuselage at one of the first end or the second end; and a thrust generating device disposed at one of the first end or the second end and configured to move the propulsion unit relative to the payload along a propulsion flight path. The movement of the propulsion unit imparts movement of the buoyant aerial vehicle along a vehicle flight path.

A highly maneuverable craft, which may be lighter-than-air, is disclosed, having undulating fins of a light-weight material that may undulate along the horizontal axis of the craft and/or rotate 360 degrees and continuously about the central longitudinal axis of the craft. The fins may be actuated by motors coupled to the fins and coupled to the exterior of the craft via circumferential bands. Motion of the fins creates aerodynamic thrust. The circumferential bands may serve as tracks or channels along which the motors run, allowing the motors to travel 360 degrees or travel continuously around the exterior of the craft and thereby draw the fins about the craft. The circumferential bands may serve as reinforcing components, allowing the motors to exert torque against the body of the craft which may be thin-walled for maximum positive buoyancy. An on-board battery may power the motors via electrical circuits extending around the bands. The position and travel of the motors about the bands may be controlled by a central processing unit. A moveable weight, such as on a track with a motor, may be incorporated into or onto the craft for additional pitch control.

A highly maneuverable craft, which may be lighter-than-air, is disclosed, having undulating fins of a light-weight material that may undulate along the horizontal axis of the craft and/or rotate 360 degrees and continuously about the central longitudinal axis of the craft. The fins may be actuated by motors coupled to the fins and coupled to the exterior of the craft via circumferential bands. Motion of the fins creates aerodynamic thrust. The circumferential bands may serve as tracks or channels along which the motors run, allowing the motors to travel 360 degrees or travel continuously around the exterior of the craft and thereby draw the fins about the craft. The circumferential bands may serve as reinforcing components, allowing the motors to exert torque against the body of the craft which may be thin-walled for maximum positive buoyancy. An on-board battery may power the motors via electrical circuits extending around the bands. The position and travel of the motors about the bands may be controlled by a central processing unit. A moveable weight, such as on a track with a motor, may be incorporated into or onto the craft for additional pitch control.

The present invention relates to a hydrogen recycling flight system and flight method, the hydrogen recycling flight system including: a flight fuselage which has at least one pair of wings at each of both sides of a body; a hydrogen gas balloon which is air-tightly connected to the flight fuselage; a hydrogen fuel cell which is connected with the hydrogen gas balloon and is installed outside or inside the flight fuselage; and a secondary battery which is charged with electricity generated from the hydrogen fuel cell, electricity generated from a solar cell provided at an outer peripheral portion of the flight fuselage, or electricity of an external power network, in which by using a switch, the hydrogen fuel cell is switched to a water electrolysis device or the water electrolysis device is switched to the hydrogen fuel cell, the hydrogen recycling flight system includes: a water tank which stores water generated from the hydrogen fuel cell; the water electrolysis device which electrolyzes the stored water; a switch control device which switches functions of the hydrogen fuel cell and the water electrolysis device; and a high-pressure gas barrel which high-pressure stores hydrogen gas and oxygen gas generated in the water electrolysis device, and the flight fuselage flies by controlling the volume of the hydrogen gas balloon that is flotation power of a flight vehicle by an operation of the hydrogen fuel cell or the high-pressure gas barrel.

The present invention relates to a hydrogen recycling flight system and flight method, the hydrogen recycling flight system including: a flight fuselage which has at least one pair of wings at each of both sides of a body; a hydrogen gas balloon which is air-tightly connected to the flight fuselage; a hydrogen fuel cell which is connected with the hydrogen gas balloon and is installed outside or inside the flight fuselage; and a secondary battery which is charged with electricity generated from the hydrogen fuel cell, electricity generated from a solar cell provided at an outer peripheral portion of the flight fuselage, or electricity of an external power network, in which by using a switch, the hydrogen fuel cell is switched to a water electrolysis device or the water electrolysis device is switched to the hydrogen fuel cell, the hydrogen recycling flight system includes: a water tank which stores water generated from the hydrogen fuel cell; the water electrolysis device which electrolyzes the stored water; a switch control device which switches functions of the hydrogen fuel cell and the water electrolysis device; and a high-pressure gas barrel which high-pressure stores hydrogen gas and oxygen gas generated in the water electrolysis device, and the flight fuselage flies by controlling the volume of the hydrogen gas balloon that is flotation power of a flight vehicle by an operation of the hydrogen fuel cell or the high-pressure gas barrel.