I have read a discussion about a centrifugal fan on a wheel system The fan pulled air to itself and push the air outward from center. Most flying machines that I aware of push air down, as Newton describes. Since air is move downward, but toward machine could a new drone work this way? Would it create small lift or not work .... To much energy needed maybe I attach the picture from other thread that show movement, but for this it would be in air. Thanks to all, you are big help!