Engineers from the United States found that during the planning of a snake wriggling in the horizontal and vertical planes. Decorated flying wood snake removed with the help of technology motion capture, and on the basis of parameters of horizontal and vertical waves have created a planning model. It turned out that the horizontal wriggling stability and range, and helps to maneuver. The authors of an article published in the journal Nature physics, suggest that based on the model, you can create a flying robozou.
Decorated tree snakes of the genus Chrysopelea — the only legless vertebrates that can fly (or rather, plan). To do this, they are repelled from the branches, flatten their body so that in cross section it resembles a triangle, and S-shaped meander. It is unclear why the reptiles to bend in flight — perhaps it improves aerodynamics and helps to plan longer, and may, snakes are moving so just out of habit.
Researchers under the leadership of Isaac Gitana (Isaac Yeaton) from Virginia tech, studied the planning of snakes with the help of technology motion capture. Seven snakes of the species Chrysopelea paradisi noted on 11-17 markers, the animals jumped from a height of 8.3 meters on an artificial tree in the arena. In each marked point is registered, the angle of inclination of the body of the serpent about the axis of the body in horizontal and vertical planes.
The authors found that snakes twists not only horizontally, but also vertically. Two waves shifted in phase by 90 degrees, hoizontally is a sine wave with a flat top and an amplitude of 80 to 120 degrees, and vertical with a narrow peak and an amplitude of 20 to 45 degrees. In the snake “fits” 1-1. 5 wave period horizontal and 2-3 vertical, the second frequency is 2-3 times higher (2-3,4 Hz vs 1-1,7). There is another wave — bending the end of the tail relative to the head, it was called dorsoventrally wave.