|Mustafa Umut Sarac
Wohnort: Istanbul - Turkey
|Verfasst am: 15.08.2019, 16:55 Titel: Falco Peregrinus, Vortice Aerobatics for Boomerang
|pI think the short lesson from below paper , vortex on wing might be created at the back of the wing airfoil.
Peregrine Falcon dives at 180 kmph and it makes extreme aerobatics with the help of vortexes of wing , feathers and tail.
The other short lesson is to put these vortexes meet at some point and n tail.
1- vortex must be elongated to faraway wake and some vortexes must be met.
2- vortex must start at the back of the airfoil.
3- and there can be a tail at the back of the airfoil.
I got these ideas from below paper.
Vortices enable the complex aerobatics of peregrine falcons
Erwin R. Gowree 1, Chetan Jagadeesh1, Edward Talboys1, Christian Lagemann1 & Christoph Brücker1
The peregrine falcon (Falco peregrinus) is known for its extremely high speeds during hunting dives or stoop. Here we demonstrate that the superior manoeuvrability of peregrine falcons during stoop is attributed to vortex-dominated flow promoted by their morphology, in the M-shape configuration adopted towards the end of dive. Both experiments and simulations
on life-size models, derived from field observations, revealed the presence of vortices emanating from the frontal and dorsal region due to a strong spanwise flow promoted by the forward sweep of the radiale. These vortices enhance mixing for flow reattachment towards the tail. The stronger wing and tail vortices provide extra aerodynamic forces through vortexinduced
lift for pitch and roll control. A vortex pair with a sense of rotation opposite to that from conventional planar wings interacts with the main wings vortex to reduce induced drag, which would otherwise decelerate the bird significantly during pull-out. These findings could help in improving aircraft performance and wing suits for human flights.
PAPER IS AT HEREBELOW
Mustafa Umut Sarac
Mustafa Umut Sarac