The Carter Copter
Carter Aviation Technologies is a research and development company, pioneering new aviation concepts. The main focus of this company is the slowed-rotor compound aircraft, a vertical takeoff and landing aircraft that uses the rotor for takeoff and landing, and a small, efficient wing for high speed flight, up to 500 mph. As you can see in the video below, they successfully demonstrated the slowed rotor concept with the CarterCopter Technology Demonstrator (CCTD). This aircraft is also the first to reach mu- 1 (μ-1).
As you get a slower rpm/tip speed ration mu increases and the drag on the rotor decreases dramatically. When this type of technology was first introduced, rpm/tip speed ration was closer to mu-0.6 which would have caused massive flapping of the propeller. This kind of problem can be devastating if the propeller was to break.
The way this aircraft does it is it uses it’s small efficient wing at higher speeds. When this is done, the propeller slows down and it will also level it’s self in order to reduce drag.
Carter Aviation Technologies isn’t planing to put this aircraft in production but help other aircraft manufacturer incorporate their technologies in their designs. However, in the future they plan on selling fast building kits. As for when this will happen they don’t know yet. They first need to get it certified and the process if time consuming.
For more information on Carter Aviation Technologies visit their website at www.cartercopters.com