Molto interessante.
“The effects of wings’ colors of migrating birds with soaring and gliding capabilities on their flight performance have been investigated and discussed.
Taking the Albatross’ wing as an example, the temperature of the top surface of the wing was calculated through an energy balance.
Then, the Blasius solution for laminar boundary layer was used to calculate the generated drag forces of the wing.
The results showed that, through using the thermal balance of the wing surface for the different wing colors, the temperature difference between using black and bright surface colors is approximately equal to 10°C.
It was also found that the black top wing color of the albatross improves its flight performance by reducing its drag, regardless of the weather or the place.
The observed reduction in the drag force over the wing can be one of the main reasons behind the high endurance and efficiency of these migrating birds.
The performed analysis in this study showed the impacts of the surface wing colors on the effectiveness of migrating birds.
This analysis is so beneficial and can be utilized to mimic new generation of biologically inspired drones with high endurance due to the accurate selection of the wing surface colors.”
Effects of birds’ wing color on their flight performance for biomimetics purposes (PDF Download Available).
Available from:
https://www.researchgate.net/publica...etics_purposes [accessed Oct 15 2017]