Float with flaps for air cooling in an aircraft

1. A system comprising:

a propeller coupled to an aircraft;

a battery configured to power the propeller;

a float configured to provide buoyancy for the aircraft when the aircraft is waterborne and to hold the battery; and

a flap provided on a surface of the float, wherein the flap is configured to be closed at least some of the time when the aircraft is waterborne and open at least some of the time when the aircraft is airborne.

2. The system of claim 1 , wherein the flap is configured to at least one of open or close by active actuation.

3. The system of claim 1 , wherein the flap includes an air inlet outlet exhaust port.

4. The system of claim 1 , wherein the flap includes an electromechanical component.

5. The system of claim 1 , wherein the flap is configured to at least one of: open or close, in response to a detected temperature.

6. The system of claim 1 , wherein the flap is configured to at least one of: open or close, in response to a detected pressure.

7. The system of claim 1 , wherein the flap is configured to operate in response to at least one of: temperature or pressure indicating a state of an aircraft component.

8. The system of claim 7 , wherein the aircraft component includes at least one of the battery or electronic speed control.

9. The system of claim 1 , wherein the flap is coupled to an air duct pipe having at least one bend.

10. The system of claim 1 , wherein the flap is oriented to permit air to enter from a top surface of the float.

11. The system of claim 1 , wherein the flap is oriented to permit air to enter from a side surface of the float.

12. The system of claim 1 , further comprising at least one drain channel configured to vent particles to outside the float.

13. The system of claim 1 , further comprising at least one drain channel including a check valve configured to reduce backwash.

14. The system of claim 1 , further comprising an air duct pipe coupled to the flap and provided inside the float, the air duct pipe including a fan assembly at an opening of the air duct pipe configured to separate particles from air.

15. The system of claim 1 , further comprising an air duct pipe coupled to the flap and provided inside the float, the air duct pipe including a fan assembly configured to generate a vortex to separate air from other particles.

16. The system of claim 1 , further comprising:

an air duct pipe coupled to the flap and provided inside the float, the air duct pipe including a fan assembly configured to generate a vortex to separate air from other particles; and

at least one drain channel coupled to the air duct pipe and configured to vent the other particles to outside the float.

17. The system of claim 1 , further comprising an output airflow regulator including a slot track provided on the surface of the float.

18. The system of claim 1 , further comprising an air duct pipe coupled to the flap, wherein the air duct pipe is tapered such that input air enters a narrower end of the air duct pipe.

19. The system of claim 1 , further comprising:

an air duct pipe coupled to the flap; and

a stopper and spring assembly provided inside the air duct pipe, wherein the stopper and spring assembly is configured to prevent moisture from entering the float when at least partially submerged in water.

20. A method comprising:

providing a propeller coupled to an aircraft;

providing a battery configured to power the propeller;

providing a float configured to provide buoyancy for the aircraft when the aircraft is waterborne and to hold the battery; and

providing a flap on a surface of the float, wherein the flap is configured to be closed at least some of the time when the aircraft is waterborne and open at least some of the time when the aircraft is airborne.