MD Helicopters is making performance enhancements to its MD540F as it prepares to move toward certification in 2015. The new aircraft, an updated and modernized variant of the MD500 family, will get a new anti-torque system. Engineers are studying a number of options including a four-bladed tail rotor to improve the aircraft’s performance in conjunction with the new Rolls-Royce M250-C47E turboshaft, which the company announced it had selected for the MD540F during Heli-Expo 2013 in ...


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