The humpback whale has pronounced bumps or tubercles along the leading edge of its pectoral flippers (above left). A idealized model of the flipper (above upper right), which was tested in a wind tunnel, demonstrated that the tubercles enhanced hydrodynamic performance…
airblade, turbine, windmill
Continue reading walefin for optimized turbines
Certain spiders protect their delicately crafted insect nets with a special silk rope that reflects ultraviolet rays. Birds can see the ultraviolet rays and recognize the webs as obstacles they should avoid.
If engineers can reproduce the effect, it might save birds from their occasional accidental suicide runs into glassy buildings. German engineers at Arnold Glas copied the spiders and glazed their Ornilux-brand glass with a web-like pattern of ultraviolet-reflecting coating to save the birds from high-speed headaches.
innovative glas against birds collision
Continue reading Spider Web Glass
swim suit, clean surfaces, glue this foil on airplanes, small riffles will cause turbulance and degrease friction.
Continue reading Shark´s skin make us faster