Propeller-driven helicopter or airplane

An aircraft, being a propeller-driven helicopter or airplane and comprising a fuselage and a propeller including a plurality of blades, wherein

• fourth open channels used to extend fluid paths are formed in windward sides of the blades in a lengthwise direction;
• the fourth open channels extend from sides of roots of the blades to tails away from the sides of the roots, and the fourth open channels are concave channels and convex channel, or the fourth 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 fourth 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.

An aircraft, being a propeller-driven helicopter or airplane and comprising a fuselage and a propeller including a plurality of blades, wherein

• fourth open channels used to extend fluid paths are formed in windward sides of the blades in a lengthwise direction;
• the fourth open channels extend from sides of roots of the blades to tails away from the sides of the roots, and the fourth open channels are concave channels and/or convex channel;
• a pressure direction of a centrifugal force generated during rotation of the blades is consistent with a flowing direction of fluid in the fourth 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 second open channels which are formed in a windward side of the fuselage and used to extend a fluid path;
• the second open channels are concave channels or convex channels, or the second open channels are concave channels and convex channels.