Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1997-11-24
1999-12-07
Poon, Peter M.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
244 1711, B64C 2752, B64C 2700
Patent
active
059969342
ABSTRACT:
A tethered autogyro including means for tilting the autogyro rotor to compensate for differences in relative air pressure on rotor blades while minimizing frictional pressures restricting rotor rotation. The autogyro includes a fuselage; a rotor mast having a lower end attached to the fuselage and a rearwardly tilted upper section; upper and lower retainers separated by a given distance on the mast upper section; and a tiltable rotor mounted on the mast between the retainers, the rotor including a hub having a vertical dimension greater than the given distance, and rotor blades attached to the hub. The hub includes a mast receiving bore that increases in diameter from an upper circular edge having a diameter approximately equal to the diameter of the mast to a lower opening that has a diameter in at least one direction larger than the diameter of the mast.
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Ducker, Jr. Charles R.
Poon Peter M.
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