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A bionic combined airfoil design method based on carved wings

A kind of airfoil design and airfoil technology, which is applied in the direction of ground equipment, transportation and packaging, aircraft parts, etc., can solve the problem that the airfoil cannot meet the high maneuverability requirements of the aircraft, and achieve the effect of breaking through the technical bottleneck and increasing the lift and drag

Active Publication Date: 2020-08-21
ZHEJIANG UNIV OF TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the existing airfoils cannot meet the high maneuverability requirements of future aircraft, and proposes a design method for bionic composite airfoils with high maneuverability based on large raptor carved wings

Method used

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  • A bionic combined airfoil design method based on carved wings
  • A bionic combined airfoil design method based on carved wings
  • A bionic combined airfoil design method based on carved wings

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Embodiment Construction

[0050] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0051] A bionic combined airfoil design method based on carved wings of the present invention uses carved specimens with excellent maneuverability as the parent, and uses methods such as three-dimensional scanning, thickness-camber fitting, and combined basic airfoil-flying feather airfoil to complete the high-speed airfoil. The specific steps of maneuvering airfoil design are as follows:

[0052] (1) Determine the rapid upward posture of the eagle.

[0053] During the perching process, the rapid upward posture of the wings has the following characteristics: the wings present an approximate M shape, and the flight feathers assume a typical downward posture. A high-definition high-speed camera is used to track and shoot the changing law of the eagle's wings during the perching process from multiple angles such as front, rear, left, right, and ...

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Abstract

The invention provides a design method of a biomimetic combined airfoil based on a carved wing. The method comprises the following steps: (1) determining the rapid pitch-up attitude of the carved airfoil; (2) Making the carved sample under the fast upward posture; (3) specimen processing of carved wing before scanning; (4) scanning the wings to obtain the point cloud of the middle section of the wings; 5) determine that position of the two-dimensional airfoil and obtaining the combine airfoil point; (6) obtaining the point sets of the basic airfoil and the flying wing; (7) The curvature and thickness distributions of the basic airfoil are extracted, and the classical wing formula is used to fit the basic airfoil. (8) Extract the curvature and thickness distribution of the flying wing, anduse exponential function to fit the flying wing; (9) Assembling the basic airfoil and the flying wing to construct the bionic airfoil; (10) The aerodynamic characteristics of the biomimetic airfoil inmaneuvering flight were obtained through the simulation calculation of the biomimetic airfoil with high maneuverability.

Description

technical field [0001] The invention relates to a combined airfoil design method for a high maneuverability wing of an aircraft. Background technique [0002] High maneuverability is an important guarantee for intelligent obstacle surmounting and rapid take-off and landing of future aircraft. High maneuverability and high agility have become the key features of future unmanned aerial vehicles and even the next generation of advanced fighter jets. With the in-depth research of UAV swarm combat technology by the research institutions of major military powers, although great breakthroughs have been made in some key areas, there are still many difficulties. At present, countries still need to focus on the high maneuverability. A technical problem. Birds in nature can easily perform difficult and maneuverable flight actions such as quick turn, emergency stop, and perch. However, the maneuverability of existing human aircraft is far lower than that of natural birds, especially la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64F5/00
CPCB64F5/00
Inventor 唐迪邱雅柔朱海
Owner ZHEJIANG UNIV OF TECH
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