Patent ID: 8052094

Claim:
A hybrid helicopter having a long range and a high forward speed, the helicopter comprising: an airframe comprising: a fuselage; a lift-producing surface secured to the fuselage; and stabilizing and maneuvering surfaces comprising: a horizontal stabilizer with at least one pitch control surface that is movable relative to a front portion of the horizontal stabilizer; and at least one suitable stabilizer; and an integrated drive system comprising: a mechanical interconnection system connected between a rotor of a radius with collective pitch and cyclic pitch control of the blades of said rotor, and at least one propeller with collective pitch control of the blades of said propeller; and at least one turbine engine driving the mechanical interconnection system; the helicopter comprising a pitch control surface system for controlling the angle at which said 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 said hybrid helicopter, and a cyclic pitch system for controlling the cyclic pitch of the blades of said rotor in order to control the longitudinal trim of the hybrid helicopter as a function of flight conditions, wherein said pitch control surface system and said cyclic pitch system communicate with a flight computer to automatically control the pitch control surface and the cyclic pitch of the blades.