A counter rotating ducted fan having a permanent magnet drive. comprising a ducted
housing having an iron core stator and a pair of counter rotating propeller blades
rotationally mounted on a propeller shaft positioned axially within the housing
Each of the propeller blades includes a plurality of individual propeller blades
of an even number. Permanent magnets are mounted in permanent magnet insertion
holes located at the tip of each of the individual propeller blades. When excited
by an electrical current a pair of excitation windings mounted within the iron
core stator control the rotational speed and direction of the pair of counter rotating
propeller blades.