Scientists have found a similarity between a pigeon and a helicopter

By studying the video of the flight the dove species Columba livia, made ​​at a high speed camera, U.S. researchers have found similarities in this type of bird flight and the helicopter.
During the experiment, the bird was placed in a confined space (the usual garage) so that it is constantly turned. After that, scientists have constructed a mathematical model of the flight, using data on the distribution of mass inside the bird, according to Lenta. ru.
As a result, researchers have shown that the aerodynamic force acting on a dove, while the rotation does not change its direction relative to the bird's body. Thus, the rotation is carried out solely by changing the orientation of birds in the area. According to scientists, in a similar way, for example, the momentum carries a helicopter - to move forward, the machine tilts the chassis.
Scientists believe that the use of this method of rotation, in contrast to the ... In particular, it does not generate enough lift for the aircraft type superelevation. It is noted that many of the birds, in contrast to the pigeon, change the direction of flight, including changing the direction of the wind power relative to body.
Questions relating to the mechanics of movement of living beings, are of great interest to scientists. Thus, in the middle of November 2011 in the publication Biology Letters published a work, which the authors analyzed how jumping frog. As a result, they found that the system of amphibians tendon acts like a catapult.