Patent ID: 7658346

Claim:
A hovering air vehicle comprising: two duct fan assemblies comprising a rotating first fan in a first fan assembly and a second counter rotating fan in a second fan assembly; at least one engine for powering the first fan and said second fan, wherein the at least one engine is disposed outside of a duct inflow wave between the first fan assembly and the second fan assembly; an energy transfer apparatus for independently regulating a speed of the first fan and the second fan; at least two pods, a first pod from the at least two pods directly affixed to the first ducted fan assembly and the second duct fan assembly, and a second pod from the at least two pods directly affixed to the first duct fan assembly and the second duct fan assembly, the at least two pods being located between the two duct fan assemblies so as to maintain the center of gravity in the center of the ducts, and the at least two pods further comprising assemblies for removably affixing the at least two pods to the first and second duct fan assemblies and adjusting a lateral location of the at least two pods; a one axis of freedom tail cone for each duct fan assembly for both pitch and yaw attitude control of the hovering air vehicle; and a controller for independently controlling each tail cone position.