organized by the Institute of Thermomechanics of the CAS, v. v. i.,
every first Wednesday of the month at 10:00
in the Conference Room B in the main building of the Institute of Thermomechanics of the CAS, v. v. i. (see directions)
 

Contact persons: Dr. Radek Kolman, Dr. Hanuš Seiner

 

Wednesday, March 2, 2016, 13:30
 

 

Lecture outline:
Unlike airplanes, animals must have either flapping wings (birds, bats) or oscillating wings (insects). Only such wings can produce both lift and thrust, provided the animal has sufficient muscle power.

To fly, wings impart downward momentum to the surrounding air and obtain lift by reaction. How this is achieved under various flight situations (cruise flight, hovering, landing, etc.), and what is the role of the wing-generated vortices in producing lift and thrust is discussed (both for birds and insects).

Bird wings have several possibilities how to obtain the same functions as airplane wings. Birds have the capabilities of adjusting the shape of the wing according to what the immediate flight situation demands, as well as of responding almost immediately to conditions the flow environment dictates.