Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and auto-rotating wing sustained
Patent
1998-08-26
2000-05-16
Eldred, J. Woodrow
Aeronautics and astronautics
Aircraft, heavier-than-air
Airplane and auto-rotating wing sustained
244 1711, 244 1723, 244 1725, 244 23B, 244 23C, B64C 2702
Patent
active
060625082
ABSTRACT:
A lift rotor assembly for a compound aircraft having a fuselage, including at least one circular disk structure with a plurality of bladelets spaced peripherally thereabout, a drive shaft coupled to a power source at a first end for rotating the drive shaft at low torque, a hub coupled to each circular disk structure and being located concentrically about the drive shaft, a gear drive coupled to a second end of the drive shaft opposite the first drive shaft end, and a first gear coupled to the gear drive and the hub for the circular disk structure located adjacent to the gear drive, wherein the first gear is operated at high torque to rotate one of the circular disk structures. The lift rotor assembly also includes a gear reduction apparatus associated with the gear drive in order to operate the first gear at high torque, as well as a constant velocity joint connecting an upper portion and a lower portion of the drive shaft.
REFERENCES:
patent: 2950074 (1960-08-01), Apostolescu
patent: 3933324 (1976-01-01), Ostrowski
patent: 4730795 (1988-03-01), David
patent: 4913376 (1990-04-01), Black
patent: 5791592 (1998-08-01), Nolan et al.
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