The invention relates to a flying fish pectoral fin characteristic-based bionic flexible wing capable of increasing lift force, and belongs to the field of bionic flexible wings. Comprising a leading edge fin ray, a rib-shaped fin ray I, a rib-shaped fin ray II, a rib-shaped fin ray III and a flexible wing membrane, wherein the flexible wing membrane is adhered to the upper surfaces of the leading edge fin ray, the rib-shaped fin ray I, the rib-shaped fin ray II and the rib-shaped fin ray III. The bionic wing has the advantages that the structure is novel, the bionic wing based on the characteristics of the pectoral fin of the flying fish is designed by observing the overall shape of the pectoral fin of the flying fish and the fin ray, then the elastic parameter of the pectoral fin membrane of the flying fish is measured through a nanoindentation experiment, and the unique fin membrane material attribute is given to the bionic wing; the designed bionic flexible wing has the aerodynamic performance similar to that of the pectoral fin of a flying fish, the pressure of the lower surface can be increased through the rib-shaped fin ray structure, and the low-pressure area of the upper surface of the wing is increased through upward deformation of the flexible film, so that the pressure difference is increased, meanwhile, efficient flight can be kept within a larger attack angle range, and the wing has the more excellent aerodynamic performance.
本发明涉及一种基于飞鱼胸鳍特征可增大升力的仿生柔性机翼,属于仿生柔性机翼领域。包括前缘鳍条、肋状鳍条一、肋状鳍条二、肋状鳍条三和柔性翼膜,其中柔性翼膜粘贴在前缘鳍条、肋状鳍条一、肋状鳍条二和肋状鳍条三的上表面。优点是结构新颖,通过对飞鱼胸鳍整体形态以及对鳍条的观察,设计了基于飞鱼胸鳍特征的仿生机翼,接着通过纳米压痕实验测定飞鱼胸鳍膜的弹性参数,将独特的鳍膜材料属性赋予仿生机翼,由此设计出的仿生柔性机翼具有与飞鱼胸鳍类似的气动性能,可通过肋状鳍条结构增大下表面压力、柔性薄膜向上变形增大机翼上表面低压区,从而增大压力差,同时能够在更大的迎角范围内保持高效飞行,使机翼具有更优秀的气动性能。
Flying fish pectoral fin characteristic-based bionic flexible wing capable of increasing lift force
一种基于飞鱼胸鳍特征可增大升力的仿生柔性机翼
2024-04-12
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
Roof-wing aircraft capable of flying by utilizing vortex lift force
European Patent Office | 2023
|Rigid-flexible coupling bionic pectoral fin propelling device
European Patent Office | 2024
|