High Quality Content by WIKIPEDIA articles! The Carter PAV (Personal Air Vehicle) is a two-bladed, compound autogyro developed by Carter Aviation Technologies to demonstrate slowed rotor technology. The design has an unpowered rotor mounted on top of the fuselage, wings like a conventional fixed-wing aircraft mounted underneath, and a controllable pitch pusher propeller at the rear of the fuselage. Tungsten weights (75 pounds each) are placed in the rotor tips to enhance rotational energy and to reduce flapping.