Novel twistable flapping wing structure and flapping wing twisting method

A wing structure and a new type of technology, applied in the field of bionic aircraft, can solve the problems of increased consumption, increased wing complexity and burden, poor control efficiency, etc., and achieve the effect of simplifying the structure

Pending Publication Date: 2019-01-18
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, an active twisting mechanism is used for twisting flapping wings. This method requires an additional twisting mechanism and energy input, which increases the complexity and burden of the wing; the twisting mechanism is controlled from the base of the w

Method used

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  • Novel twistable flapping wing structure and flapping wing twisting method
  • Novel twistable flapping wing structure and flapping wing twisting method
  • Novel twistable flapping wing structure and flapping wing twisting method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0074] Example 1

[0075] A new type of twistable flapping wing structure includes a wing, a pipe, and a pump. The root of the wing is a flapping wing shaft. The wing flaps around the flapping wing axis. The pipe is located inside the wing. It includes an inflow section, a connection section and an outflow section. The pump is in communication with the pipeline, and the pump makes the fluid circulate in the pipeline.

[0076] The pipes are arranged in the span direction inside the wings.

[0077] The inflow section is located at the front edge of the wing.

[0078] The outflow section is located at the rear edge of the wing.

Example Embodiment

[0079] Example 2

[0080] A flapping wing torsion method adopts a twistable flapping wing structure. The twistable flapping wing structure includes a wing, a pipe, and a pump. The root of the wing is a flapping wing shaft, and the flapping wing vibrates around the flapping wing axis. The pipeline is located inside the wing, the pipeline includes an inflow section, a connecting section and an outflow section, the pump is in communication with the pipeline, and the pump makes the fluid circulate in the pipeline.

[0081] The pipes are arranged in the span direction inside the wings.

[0082] The inflow section is located at the front edge of the wing.

[0083] The outflow section is located at the rear edge of the wing. The torsion frequency automatically matches the flapping wing frequency.

[0084] Turn on the pump and make the fluid circulate in the pipeline to realize the twisting in the flapping process.

[0085] Evaluation test one

[0086] Finite element software Abaqus is used to ...

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Abstract

A novel twistable flapping wing structure comprises at least a wing, a pipe and a pump, wherein the root of the wing is a flapping wing shaft, the wing vibrates around the flapping wing shaft, the pipe is located inside the wing, the pipe comprises an inflow section, a connecting section and an outflow section, the pump is in communication with the pipe, and the pump circulates fluid in the pipe.The novel twistable flapping wing structure provided by the invention has the advantages of simple and efficient control, automatic frequency matching, and remarkable effect on the wing with high aspect ratio.

Description

technical field [0001] The invention relates to the field of bionic aircraft, in particular to a twistable flapping wing structure and a flapping wing twisting method. Background technique [0002] The insect flapping-wing aircraft belongs to the bionic aircraft. Insects fly by flapping their wings, which simultaneously generate lift and thrust. The flapping wing is similar to the motion of a propeller, and the wings undergo periodic flat flapping motions and spanwise twists. By twisting, it is ensured that each section maintains approximately the same angle of attack with the incoming flow, thereby improving aerodynamic performance. [0003] In the prior art, an active twisting mechanism is used for twisting flapping wings. This method requires an additional twisting mechanism and energy input, which increases the complexity and burden of the wing; the twisting mechanism is controlled from the base of the wing. For wings with a chord ratio, the control efficiency of the ...

Claims

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Application Information

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IPC IPC(8): B64C33/02
CPCB64C33/02
Inventor 侯丹肖烜仲政殷雅俊
Owner SHANGHAI MARITIME UNIVERSITY
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