Trans-media unmanned aerial vehicle device and control method thereof

1. A trans-media unmanned aerial vehicle device, comprising:

a housing, and

a piston arranged in the housing and capable of reciprocating in the housing,

wherein one end of the housing is provided with an opening; several flying wings are uniformly arranged in a circumferential direction of the piston; the flying wings are rotatably connected to a side of the piston facing the opening and configured to spread or retract; and under the pushing of the piston, the flying wings spread to an outside of the housing and retract back into the housing upon release of the piston, wherein the piston comprises a piston head, a piston tail, and a piston rod for connecting the piston head to the piston tail; and the piston tail is located outside the housing and is capable of closing the housing.

2. The trans-media unmanned aerial vehicle device of claim 1 , wherein after the housing and the piston tail are buckled, the whole is formed into a spindle shape; the piston head is of a hollow structure; and a mass of the piston tail is greater than that of the piston head.

3. The trans-media unmanned aerial vehicle device of claim 2 , wherein the piston tail has an adjustable density.

4. The trans-media unmanned aerial vehicle device of claim 1 , wherein each flying wing comprises a rotating rod, and a rotor blade arranged at a free end of the rotating rod; and the rotating rod is provided with a magnetic structure that attracts the rotor blade.

5. The trans-media unmanned aerial vehicle device of claim 1 , wherein each flying wing comprises a rotating rod, and a rotor blade arranged at a free end of the rotating rod; and the rotating rod is provided with a magnetic structure that attracts the rotor blade.

6. The trans-media unmanned aerial vehicle device of claim 2 , wherein each flying wing comprises a rotating rod, and a rotor blade arranged at a free end of the rotating rod; and the rotating rod is provided with a magnetic structure that attracts the rotor blade.

7. The trans-media unmanned aerial vehicle device of claim 3 , wherein each flying wing comprises a rotating rod, and a rotor blade arranged at a free end of the rotating rod; and the rotating rod is provided with a magnetic structure that attracts the rotor blade.

8. The trans-media unmanned aerial vehicle device of claim 4 , wherein a mounting slot is formed in the piston head; the mounting slot has an axial limiting wall and a radial limiting wall; and the rotating rod is hinged in the mounting slot.

9. The trans-media unmanned aerial vehicle device of claim 5 , wherein a mounting slot is formed in the piston head; the mounting slot has an axial limiting wall and a radial limiting wall; and the rotating rod is hinged in the mounting slot.

10. The trans-media unmanned aerial vehicle device of claim 6 , wherein a mounting slot is formed in the piston head; the mounting slot has an axial limiting wall and a radial limiting wall; and the rotating rod is hinged in the mounting slot.

11. The trans-media unmanned aerial vehicle device of claim 7 , wherein a mounting slot is formed in the piston head; the mounting slot has an axial limiting wall and a radial limiting wall; and the rotating rod is hinged in the mounting slot.

12. The trans-media unmanned aerial vehicle device of claim 4 , wherein four rotating rods are provided which are distributed in a cross shape.

13. The trans-media unmanned aerial vehicle device of claim 5 , wherein four rotating rods are provided which are distributed in a cross shape.

14. The trans-media unmanned aerial vehicle device of claim 6 , wherein four rotating rods are provided which are distributed in a cross shape.

15. The trans-media unmanned aerial vehicle device of claim 7 , wherein four rotating rods are provided which are distributed in a cross shape.

16. The trans-media unmanned aerial vehicle device of claim 4 , wherein the piston is connected with a power unit; the power unit comprises a piston aeroengine and a hydraulic system driven by the piston aeroengine; and the hydraulic system is controlled to push the piston to move.

17. The trans-media unmanned aerial vehicle device of claim 5 , wherein the piston is connected with a power unit; the power unit comprises a piston aeroengine and a hydraulic system driven by the piston aeroengine; and the hydraulic system is controlled to push the piston to move.

18. A method for operating a trans-media unmanned aerial vehicle device, comprising:

launching an unmanned aerial vehicle device from water toward air, the unmanned aerial vehicle device comprising:

a housing, and

a piston arranged in the housing and capable of reciprocating in the housing, wherein one end of the housing is provided with an opening; several flying wings are uniformly arranged in a circumferential direction of the piston; the flying wings are rotatably connected to a side of the piston facing the opening and configured to spread or retract; and under the pushing of the piston, the flying wings spread to an outside of the housing and retract back into the housing upon release of the piston, wherein the piston comprises a piston head, a piston tail, and a piston rod for connecting the piston head to the piston tail; and the piston tail is located outside the housing and is capable of closing the housing, wherein:

when the unmanned aerial vehicle device rises to a certain height, the piston moves towards the outside of the housing relative to the housing, and the flying wings extend out of the housing and are spread;

when entering the water, the flying wings are downwards retracted, and the piston moves towards the inside of the housing relative to the housing; the flying wings are retracted into the housing; and the unmanned aerial vehicle device freely falls into the water.

19. The method of claim 18 , wherein when leaving the water, the unmanned aerial vehicle device is launched out of the water in a vertical state; and when entering the water, the unmanned aerial vehicle device falls into the water in the vertical state.