Patent ID: 8408488

Claim:
A vertical takeoff and landing air vehicle comprising: at least one vertical pylon; a platform for a payload connected to one end of the vertical pylon; landing gear attached to the outer duct; an outer duct; and a lifting rotor disk assembly comprising: a motor; a central hub assembly; at least one propeller driven by the motor; at least two sets of louver vanes mounted above and below the at least one propeller; wherein the lifting rotor disk assembly is connected to the platform by a plurality of connecting struts such that the platform is mounted on top of the lifting rotor disk assembly and forwardly offset from the center of the lifting rotor disk assembly; and at least one descent vane attached to the second opposite end of the pylon comprising; at least two symmetrical, wing-shaped co-joined planar elements; and wherein the descent vane is attached to the pylon such that the center of gravity of the descent vane is substantially in line with the central axis of the lifting disk rotor assembly and the descent vane has positive angle of attack.