Abstract: A single-shaft aerial vehicle comprises a propeller, an aerial vehicle body and a wing driver unit constituting a portion of the aerial vehicle body. The aerial vehicle body has a streamlined shape. A ring-shaped wing extending out of the wing driver unit is provided at a central position of the wing driver unit. The ring-shaped wing is movable horizontally under the drive of the wing drive unit. When drag areas of the ring-shaped wing extending out of an outer circumference of the wing drive unit are the same in all directions, the single-shaft aerial vehicle maintains its current flying posture. When the ring-shaped wing moves toward a certain direction to increase the drag area extending out of the wing drive unit in the certain direction, and contracts into the wing drive unit in its opposite direction to reduce the drag area in the opposite direction, the single-shaft aerial vehicle changes its current flying posture.

Abstract: A coaxial twin-propeller twin-motor aerial vehicle comprises an upper propeller (1), a lower propeller (2) and an aerial vehicle body (3). A first motor (4) and a second motor (5) are disposed in the aerial vehicle body (3). The first motor (4) is connected to the lower propeller (2) through a first transmission shaft (42). The second motor (5) is disposed below the first motor (4) and is connected to the upper propeller (1) through a second transmission shaft (52). The second transmission shaft (52) passes through the first motor (4), the first transmission shaft (42), and the lower propeller (2) sequentially and then is connected to the upper propeller (1). The second transmission shaft (52) and the first transmission shaft (42) are coaxial. The upper propeller (1) and the lower propeller (2) rotate at the same speed and in opposite directions under the drive of their individual motors.

Abstract: A single-shaft aerial vehicle comprises a propeller, an aerial vehicle body and a wing driver unit constituting a portion of the aerial vehicle body. The aerial vehicle body has a streamlined shape. A ring-shaped wing extending out of the wing driver unit is provided at a central position of the wing driver unit. The ring-shaped wing is movable horizontally under the drive of the wing drive unit. When drag areas of the ring-shaped wing extending out of an outer circumference of the wing drive unit are the same in all directions, the single-shaft aerial vehicle maintains its current flying posture. When the ring-shaped wing moves toward a certain direction to increase the drag area extending out of the wing drive unit in the certain direction, and contracts into the wing drive unit in its opposite direction to reduce the drag area in the opposite direction, the single-shaft aerial vehicle changes its current flying posture.

Abstract: A coaxial twin-propeller twin-motor aerial vehicle comprises an upper propeller (1), a lower propeller (2) and an aerial vehicle body (3). A first motor (4) and a second motor (5) are disposed in the aerial vehicle body (3). The first motor (4) is connected to the lower propeller (2) through a first transmission shaft (42). The second motor (5) is disposed below the first motor (4) and is connected to the upper propeller (1) through a second transmission shaft (52). The second transmission shaft (52) passes through the first motor (4), the first transmission shaft (42), and the lower propeller (2) sequentially and then is connected to the upper propeller (1). The second transmission shaft (52) and the first transmission shaft (42) are coaxial. The upper propeller (1) and the lower propeller (2) rotate at the same speed and in opposite directions under the drive of their individual motors.