Flapping rotor wing capable of achieving lift enhancement through hole

Abstract

The invention discloses a flapping rotor wing capable of achieving lift enhancement through a hole. The flapping rotor wing capable of achieving lift enhancement through the hole comprises a flapping rotor wing body, the air hole and a hinge. The flapping rotor wing body comprises a main beam, a short beam, an inclined beam and a wing membrane. The wing membrane is adhered to a plane composed of the main beam, the short beam and the inclined beam. The air hole is a rectangular hole formed in the wing membrane by clipping, and one long edge of the air hole coincides with the leading edge of the wing membrane. The hinge is a rectangular resin film sheet, and the center of the hinge coincides with the center of the air hole; one long edge of the hinge coincides with the leading edge of the wing membrane and is adhered to the main beam, and the rest edges of the hinge are naturally attached to the wing membrane. The hinge is located under the wing membrane and above the beam structure. The flapping rotor wing capable of achieving lift enhancement through the hole has the advantages that when the wing moves upwards, the hinge is opened downwards, a high-pressure air current on the upper surface of the wing flows to the lower surface though the air hole, accordingly, the pressure difference of the upper surface and the lower surface of the wing is decreased, and unloading of the negative lift force is achieved; when the wing moves downwards, the hinge is attached to the lower surface of the wing, the air current cannot pass through the air hole, the positive lift force produced by flapping is maintained, thus, the average lift force is improved, and the energy utilization rate is increased.

Description

technical field [0001] The invention relates to the field of micro-aircraft, in particular to a flapping rotor that adopts openings to realize increased lift. Background technique [0002] Since the 1990s, with the continuous maturity of traditional aircraft design technology and the great progress of microelectronics technology, micro air vehicles have been proposed and developed rapidly. Due to the characteristics of small size, light weight, and strong maneuverability, micro-aircraft has broad application prospects in national security and national economic construction, and is suitable for investigation, exploration, and rescue assistance in complex environments. [0003] At the same time, as people continue to explore the mechanism of natural biological flight and swimming, bionic design is more and more applied to the field of micro air vehicles. Publication No. is the patent application of CN101492093: "Design method of flapping rotor and miniature flapping rotor air...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the average lift of the flapping rotor is small and the energy utilization rate is low due to the negative lift generated by the flapping rotor, the invention proposes a flapping rotor that uses openings to achieve increased lift

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