A study on the method of propelling by analyzing the form of bird’s movement

Abstract

Birds in the sky fly across the ocean ceaselessly, and sometimes they fly at a speed of 200 km per hour. This is made possible not by the usage of wings but by the form of wings. It was analyzed through experiment that the air layer in the laminar flow is used. That is, there is a hollow space at the end of the wing which is equivalent to the wing of a bird. It is thought that propelling is done by the whirlpool generation device rounded by the sweepback angle with camber in this space. Whirlpool is made inside and it is discharged outside after the process of generation of whirlpool. This whirlpool is generated in a direction opposite to the revolution of wing tip vortex of a bird or an airplane. A contribution different from the existing theory is made by proving it through visible experiment.