'Shark skin' technology to boost aircraft efficiency
They've been banned from Olympic swimming pools, but shark skin suits might reappear in the air, thanks to a new initiative from Lufthansa.
The German carrier has partnered with Airbus and the Fraunhofer Institute for Manufacturing Technology and Advanced Materials (IFAM) to test a new surface coating that mimics shark skin on two Airbus A340-300s.
It's part of a two-year long research project that started in the summer 2011, and will conclude this year.
The new technology mocks the riblet effect of a shark's skin in aircraft paints -- tiny riblets on the surface reduce flow resistance when moving at speed.
Swimmers got there first
Latest research indicates that shark skin structures can reduce fuel consumption by about 1 percent and lower operating costs.
Eight 10 x 10 centimeter patches of the special lacquer coating have been attached to the fuselage and wings of the two aircraft.
It’s hoped that the new coating system will enhance the aerodynamics and energy efficiency of the plane.
The new coating is also dirt-repellent, UV-stable and abrasion- and erosion-resistant, according to Lufthansa Technik's research report.