Wind turbines produce 4% of the planet's energy, but only work well when

the wind blows just. Now, drawing on the flexible wings of insects, scientists

have found a way to make wind turbine blades 35% more efficient in energy

production. If marketed, progress could make this green technology a more

viable alternative to fossil fuels in the coming years.

Increasing the efficiency of a wind turbine is not simply a matter of turning the

rotors as fast as possible. In addition to becoming more prone to catastrophic

failure, turbines also become less efficient at higher speeds because they look

more like a wall than a rotor, preventing wind from flowing past rapidly rotating

blades, says Asfaw Beyene , San Diego State University in California, who was

not involved with the job.

The optimum amount of energy comes from the intermediate rates of rotation,

says study author Vincent Cognet, a physicist at the University of Paris-Sorbonne.

In order for them to produce energy more efficiently, the wind must hit their blades

at the "tilt angle" just to apply the correct amount of torque to a generator.

my commentary:

this information of insect wings is very inmportant because

this could be the energy of the future and probably you can make tecnology

ecology and other way to fuels fossil in one years also to increasing the turbines

or rotors more faster as possible but to optimum old the energy is necessary the

rotation and other pass to generate energy.

the conclusion for this topic is that the insect wings get energy and probability can

replace the oil but the problem is to get this energy because have very rules so to speak.

http://www.sciencemag.org