Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and helicopter sustained
Patent
1995-06-30
1998-01-20
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft, heavier-than-air
Airplane and helicopter sustained
244 1723, 244 56, 244 66, B64C 2900
Patent
active
057093571
ABSTRACT:
The invention relates to a tiltrotor helicopter comprising a fuselage (1), a wing arrangement (2) and at least one power plant (5), and including two contrarotating, cyclically controllable rotors (7, 8) which are spaced from one another in the longitudinal direction of the fuselage and arranged substantially on a longitudinal axis of the fuselage (1) as well as being respectively tiltable out of a first tilted position for helicopter flight into a second tilted position for airplane flight, the first rotor (7) being arranged at the front end of the fuselage (1) and substantially above the same and the second rotor (8) being arranged at the rear end of the fuselage (1) and substantially beneath the same, and the first rotor (7) being tiltable about a tilting axis (17) extending substantially perpendicularly to the longitudinal axis of the fuselage (1) out of the first tilted position downwardly and in front of the fuselage (1) into the second tilting position and the second rotor (8) being tiltable about a tilting axis (18) extending substantially perpendicularly to the longitudinal axis of the fuselage (1) out of the first tilted position upwardly and behind the fuselage (1) into the second tilted position.
REFERENCES:
patent: 1414241 (1922-04-01), Wells
patent: 2702168 (1955-02-01), Platt
patent: 3089666 (1963-05-01), Quenzler
patent: 3405890 (1968-10-01), Eickmann
patent: 3528630 (1970-09-01), Ferris et al.
patent: 4504029 (1985-03-01), Eickmann
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