Business Green: UK defence technology specialist QinetiQ will today unveil a new “stealth turbine” design, which it claims could significantly reduce the interference wind farms can cause to radar and air traffic control systems. Working in partnership with wind turbine manufacturing giant Vestas, the company last month successfully trialled a 44m prototype turbine blade that had been coated with radar absorbing materials similar to those used in stealth bombers. Speaking to BusinessGreen.com, …