Cartercopters wants to build a larger twin-turbofan version of its slowed rotor-compound helicopter cooncept

Carter Aviation Technologies LLC wants to build a larger, twin-turbofan version of its slowed rotor/compound helicopter, which it believes can break the rotorcraft world records for speed, range, and altitude. “We expect to achieve speeds in excess of 400 kt., distances greater than 2,000 nautical miles, and altitudes of over 50,000 ft.,” says Jay Carter, president and CEO of Carter Aviation Technologies.  To achieve this performance, the aircraft would be fitted with ...http://aviationweek.com/bca/carter-looking-partners