Category Archives: speed

walefin for optimized turbines

walefin submarineThe 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…

Technical application:

airblade, turbine, windmill

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Spider Web Glass

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.

spider_glas

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.

Technical application:

innovative glas against birds collision

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