Patent ID: 11858617
Assignee: nan
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 9:
10. An aircraft comprising a fuselage, wings and a propeller including a plurality of blades, wherein
a first plurality of open channels used to extend fluid paths are formed in windward sides of the blades in a lengthwise direction;
the first plurality of open channels extend from sides of roots of the blades to tails away from the sides of the roots, and the first plurality of open channels are concave channels and convex channel, or the first plurality of open channels are concave channels or convex channels; a pressure direction of a centrifugal force generated during rotation of the blades is consistent with a flowing direction of fluid in the first plurality of open channels, so that a larger pressure difference and lift are generated due to different flow speeds of a high-speed fluid flowing over the windward sides of the blades in the lengthwise direction and a low-speed fluid flowing over leeward sides of the blades in a widthwise direction;
the windward sides and leeward sides of the blades communicate with each other through a plurality of pressure ports; the pressure difference allows a high-pressure fluid above the leeward sides of the blades to flow to a low-pressure fluid above the windward sides of the blades through a shorter path inside the pressure ports, to reduce friction,
wherein the aircraft further comprises spoilers arranged in the concave channels or uniformly arrayed to form the convex channels, and the spoilers are in a shape selected from one or more of a triangular shape, a circular shape, a rhombic shape, a trapezoid shape, an oval shape, a spiral shape and an arc shape.