The 300 holes in each blade, most of them thinner than a human hair, are engineered to spread a coat of cool air over the spinning blades so they aren't melted by 3,000f exhaust gases.

The 300 holes in each blade, most of them thinner than a human hair, are engineered to spread a coat of cool air over the spinning blades so they aren't melted by 3, 000f exhaust gases.

With the wide use of Horizontal-axis wind turbine, the design of blade shape and the research of aerodynamic characteristics have been attracting wide-spread attention.