- Sep 17, 2008
That duck's wings have also swung forward, putting the center of lift far ahead of the center of gravity, mandating the tail's spread to avoid tumbling backward.If you look at a landing duck the wings are cupped for a high camber airfoil, the webbed feet are spread out as airbrakes, tail also spread for max area. And they are at a high angle of attack as noted above. Usually flap a bit to break the descent just prior to touch down.
Bird style flapping efficiency may require bird style highly variable wing geometry.
To duplicate that in a flapping-wing airplane will require computer-control of every aspect of wing and tail movement. Things happen too fast with moving CL for a human to control that. So now you're getting to the level of modern fighter jets with their highly unstable configurations to enable radical maneuverability. That won't be cheap or easy.