Aeronautics and astronautics – Aircraft – heavier-than-air – Fluid sustained
Reexamination Certificate
2001-05-15
2008-08-12
Dinh, Tien (Department: 3644)
Aeronautics and astronautics
Aircraft, heavier-than-air
Fluid sustained
Reexamination Certificate
active
07410123
ABSTRACT:
An aircraft is disclosed that comprises a fuselage with first and second wings non-rotatably secured to and extending from sides of the fuselage. Inner and outer tracks are secured to and encircle the fuselage, and airfoils are operably secured between the inner and outer tracks. Means are provided for rotating the airfoils. The means for rotating the airfoils may be comprised of first and second drive coils, and first and second alternators may be operably coupled to the first and second drive coils, respectively, to provide redundant power supplies. Permanent magnets in the rotor hub may be arranged in a Halbach array or may be arranged to provide a series of alternating, opposite magnetic poles. Separate drive and suspension coils may be provided in the stator. The concept may find further application in a lift fan or tail section of conventional aircraft. In that regard, a lift fan or tail section may be provided in which a stator magnetically levitates a lift fan rotor or tail rotor. The stator may include suspension coils and drive coils to eliminate the need for a drive shaft and gears to power the lift fan rotor or tail rotor.
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Dinh Tien
Dougherty J. Charles
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