Aeronautics and astronautics – Aircraft control – Automatic
Reexamination Certificate
2008-03-31
2011-11-08
Michener, Joshua (Department: 3644)
Aeronautics and astronautics
Aircraft control
Automatic
C244S006000, C244S017130, C244S195000
Reexamination Certificate
active
08052094
ABSTRACT:
A hybrid helicopter includes an airframe provided with a fuselage and a lift-producing surface together with stabilizer surfaces and a drive system including:a mechanical interconnection system between a rotor of radius (R) with collective pitch and cyclic pitch control of the blades of the rotor and at least one propeller with collective pitch control of the blades of the propeller; andat least one turbine engine driving the mechanical interconnection system. The hybrid helicopter includes first members for controlling the angle at which the at least one pitch control surface is set as a function of the bending moment exerted on the rotor mast relative to the pitch axis of the hybrid helicopter, and second members for controlling the cyclic pitch of the blades of the rotor in order to control the longitudinal trim of the hybrid helicopter as a function of flight conditions.
REFERENCES:
patent: 3075727 (1963-01-01), Ellis et al.
patent: 4103848 (1978-08-01), Johnson et al.
patent: 4304375 (1981-12-01), Builta et al.
patent: 7451949 (2008-11-01), Eglin
patent: 7970498 (2011-06-01), Sahasrabudhe et al.
patent: 2008/0237392 (2008-10-01), Piasecki et al.
Brooks & Kushman P.C.
Eurocopter
Michener Joshua
O'Hara Brian M
LandOfFree
Fast hybrid helicopter with long range with longitudinal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fast hybrid helicopter with long range with longitudinal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast hybrid helicopter with long range with longitudinal... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4289044