ZEMCH 2015 - International Conference Proceedings | Page 647

Figure 17: Structure of Nightjar wings Nightjar primary feathers are toothed like a comb; when wind passes by the wing, it allow the air to passes through the different parts of the wind from bigger feathers to smaller that breaks the wind turbulence to tiny turbulence, and this decreases the noise caused by the air passing through the flipping wings to form a silent flight. Figure 18: Comparison between Nightjar wings (left) and the toothed structure of the Nightjar wing (AskNature 2012) Figure 19: Scanning electron microscope photo of the feather structure (Taranto 2015) Thermal comfort through biomimicry in the case of Emirates Towers Metro Station in Dubai 645