Aerial vehicle equipped with multicopter mechanism

1. An aerial vehicle, comprising:

a propulsion unit that includes a base body, a rotary shaft extending in a first direction and penetrating the base body, and thrust producing mechanisms provided at both ends of the rotary shaft and produces a propulsion force for flying in air; and

a fuselage unit that is suspended from the propulsion unit below the rotary shaft, has a center of gravity at a position below the rotary shaft, is configured to be freely rotatable around the rotary shaft, and is capable of storing an article,

wherein a first pair of propeller portions is mounted on one end of the rotary shaft, and a second pair of propeller portions is mounted on another end of the rotary shaft,

wherein the first pair of propeller portions is arranged in parallel in a second direction orthogonal to the first direction, and the second pair of propeller portions is arranged in parallel in the second direction, and

wherein the rotary shaft is configured to be freely rotatable in the base body according to propulsion forces emitted by each propeller portion of the first pair of propeller portions and each propeller portion of the second pair of propeller portions.

2. The aerial vehicle according to claim 1 , wherein in the propulsion unit, the thrust producing mechanisms turn into a vertical attitude in which thrust axes of the thrust producing mechanisms become parallel to a direction of gravity or in a horizontal attitude in which the thrust axes become perpendicular to the direction of gravity, the fuselage unit takes off and lands in the vertical attitude with the propulsion force, and the fuselage unit horizontally cruises in the horizontal attitude with the propulsion force.

3. The aerial vehicle according to claim 2 , wherein the fuselage unit has a shape having a short direction in the first direction and having a longitudinal direction in the second direction orthogonal to the first direction and maintains a horizontal state in a state in which the propulsion unit is suspended.

4. The aerial vehicle according to claim 2 , wherein the fuselage unit is provided with a tail unit at a rear of the propulsion unit.

5. The aerial vehicle according to claim 2 , wherein the fuselage unit is provided with a fan that provides a rotational force that rotates the fuselage unit around the rotary shaft at rear of the propulsion unit.

6. The aerial vehicle according to claim 2 , wherein the fuselage unit includes a power supply that supplies the thrust producing mechanisms with electric power.

7. The aerial vehicle according to claim 1 , wherein the fuselage unit has a shape having a short direction in the first direction and having a longitudinal direction in the second direction orthogonal to the first direction and maintains a horizontal state in a state in which the propulsion unit is suspended.

8. The aerial vehicle according to claim 7 , wherein a part of a vertical cross-section taken in the second direction of the fuselage unit is configured to have an inverse camber shape.

9. The aerial vehicle according to claim 1 , wherein the fuselage unit is provided with a tail unit at rear of the propulsion unit.

10. The aerial vehicle according to claim 9 , wherein the tail unit is provided with a first aileron.

11. The aerial vehicle according to claim 1 , wherein the fuselage unit is provided with a fan that provides a rotational force that rotates the fuselage unit around the rotary shaft at a rear of the propulsion unit.

12. The aerial vehicle according to claim 1 , wherein the fuselage unit includes a power supply that supplies the thrust producing mechanisms with electric power.

13. The aerial vehicle according to claim 1 , wherein the fuselage unit is configured to be removable from the propulsion unit.

14. The aerial vehicle according to claim 1 , wherein the thrust producing mechanisms each includes:

a first propeller portion and a second propeller portion that are mounted on one end of the rotary shaft via a first arm portion; and

a third propeller portion and a fourth propeller portion that are mounted on another end of the rotary shaft via the second arm portion, and

wherein, in a direction orthogonal the first direction, the first propeller portion and the second propeller portion are arranged in parallel and the third propeller portion and the fourth propeller portion are arranged in parallel.

15. The aerial vehicle according to claim 14 , wherein the first arm portion and the second arm portion are each provided with a second aileron.

16. The aerial vehicle according to claim 14 , wherein the first propeller portion, the second propeller portion, the third propeller portion, and the fourth propeller portion each includes a propeller and a cylindrical duct surrounding the propeller, and

wherein the duct produces lift when the fuselage unit horizontally cruises.

17. The aerial vehicle according to claim 16 , wherein the duct is provided with a third aileron.

18. The aerial vehicle according to claim 16 , wherein the duct is provided with a leg portion extending in a direction opposite to a direction in which the propulsion force acts.

19. The aerial vehicle according to claim 14 , wherein the propulsion unit includes a base body that the rotary shaft penetrates, and

wherein a first shield portion is provided between the first arm portion and the base body, the first shield portion reduces an air flow flowing between a surface of the first arm portion and a surface of the base body, and a second shield portion is provided between the second arm portion and the base body, the second shield portion reduces an air flow flowing between a surface of the second arm portion and the surface of the base body.

20. The aerial vehicle according to claim 1 , further comprising a parallel link mechanism having a degree of freedom in a second direction orthogonal to the first direction between the fuselage unit and the propulsion unit,

wherein the fuselage unit is suspended from the propulsion unit via the parallel link mechanism.