Jan 4, 2024 · To study the aerodynamic traits of various birds, we developed a systematic method to scan bird wings, extract their airfoils, and quantify their aerodynamic performance.

To achieve a bird-like airfoil pro le, a thin, feather-like aft region was maintained together with a low aft-loading requirement. As a result, the airfoil families were designed for the aerodynamic inviscid, quarter-chord, pitching moment coe cients (inviscid Cm;c=4) of 0.14, 0.20, and 0.26.

A bird's wing acts as an airfoil, a curved surface evolved to provide lift and reduce drag (turbulance and friction). Air pushed into the airfoil by the bird's forward motion pushes more forcefully on the curved underside of the somewhat upward-tilted wing.

The pattern of air flow over bird wings, as indicated by pressure-distribution data, is consistent with aerodynamic theory for aeroplane wings at low Reynolds numbers, and with the observed lift and drag coefficients.

Jan 5, 2024 · We investigated how birds cope with gusty environments and found that their wings can act as a suspension system, reducing the effects of vertical gusts by elevating rapidly about the shoulder.

Jan 8, 2018 · Using a numerical framework to represent a flapping bird wing and compute the flow around it, we mimic the conditions of a wind tunnel and produce realistic wakes, which we compare to...

Oct 1, 2023 · To develop the rational foundations for understanding of bird flight and the design of bird-like UAVs and MAVs, the relevant aspects of bird flight are discussed in this paper, including the scaling laws, wing geometry, wing kinematics and aerodynamics.

foils and wings is classified into three categories. First, the analysis of airfoils/wings of birds as a fixed rigid body; second, birds airfoils/wings in flapping phase; and t. ird, flexible airfoils/wings in non-flapping flight. Bird wing structure is another focus found in some studies in which .

Jan 3, 2025 · When a bird’s wings rapidly pitch up during perching, it is hypothesized that an unsteady aerodynamic phenomena called dynamic stall occurs, which creates unsteady lift that is substantially higher than the steady flight maximum lift.

There are many researchers inspired by the aerodynamic of birds, flyers, and swimmers in designing their airfoils and wings to improve the aerodynamics performance of man-made flying vehicles.