Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1980-07-14
1983-10-04
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
416140, 416142, 416 20A, B64C 2739, B64C 2718
Patent
active
044074662
ABSTRACT:
A rotary wing aircraft is disclosed and includes a fuselage, a gas turbine engine operated air compressor within the fuselage, and a jet nozzle driven rotor assembly situated over the fuselage and having a rotor axis about which the assembly rotates. The rotor assembly includes a generally hollow rotor hub and a plurality of generally hollow jet nozzle driven rotor blades extending radially outwardly of the rotor hub. The rotor hub defines air conduit means to the rotor blades. A section of at least one rotor blade comprises a foldable flexible air conduit for folding the rotor blade in a radial plane relative to the rotor hub. Releasable stabilizing means, including a droop stop, is disposed between the rotor hub and an outboard portion of the rotor blade beyond the flexible air conduit section, whereby the stabilizing means may be released and the blade folded in its radial plane with the flexible air conduit section acting as a hinge.
REFERENCES:
patent: 2021481 (1933-11-01), Dornier
patent: 2742098 (1956-04-01), Jovanovich
patent: 3073394 (1963-01-01), Laufer
patent: 3356315 (1967-12-01), Kolodziej
patent: 3830588 (1974-08-01), Nagler
patent: 3838940 (1974-10-01), Hollrock
patent: 4109885 (1978-08-01), Pender
Thompson Daniel L.
Thompson Darrow
Barefoot Galen L.
Overseas International Distributors Company B.V.
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