Variable damping of haptic feedback for a flight-attitude changing linkage of an aircraft
First Claim
1. A method of providing haptic feedback for operating at least one manual flight control device suitable for making adjustments to at least one airfoil surface of a hybrid helicopter via a flight-attitude changing linkage that is provided with power assistance, the hybrid helicopter comprising at least a fuselage, a rotary wing and a fixed wing having anti-torque differential thrust propulsion arrangements distributed symmetrically thereon on either side of the fuselage, said arrangements being controlled between minimum and maximum thrust values by a manual thrust control member, the hybrid helicopter further including an autopilot suitable for acting on the power assistance for adjusting cyclic pitch of the blades of the rotary wing, said operations of said control device being damped by haptic feedback defined according to a predetermined damping force relationship, wherein said damping force relationship for operating the manual flight control device is predetermined as a function of an instantaneous load factor of the hybrid helicopter in such a manner that this instantaneous load factor is maintained between its minimum and maximum limit values in proportion to a position of said thrust control member between its minimum and maximum thrust values.
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Accused Products
Abstract
The present invention relates to haptic feedback for operating at least one manual flight control device (21) for controlling the cyclic pitch of the blades (5) of a rotary wing (4) of a hybrid helicopter (1) via power assistance (27). Said operations of said control device (21) are defined according to a predetermined damping force relationship (A) that is a function of an instantaneous load factor of the hybrid helicopter (1) in such a manner that the instantaneous load factor is maintained between its minimum and maximum limit values in proportion to a position of a thrust control member (20) between its minimum and maximum thrust values (23, 22).
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Citations
16 Claims
- 1. A method of providing haptic feedback for operating at least one manual flight control device suitable for making adjustments to at least one airfoil surface of a hybrid helicopter via a flight-attitude changing linkage that is provided with power assistance, the hybrid helicopter comprising at least a fuselage, a rotary wing and a fixed wing having anti-torque differential thrust propulsion arrangements distributed symmetrically thereon on either side of the fuselage, said arrangements being controlled between minimum and maximum thrust values by a manual thrust control member, the hybrid helicopter further including an autopilot suitable for acting on the power assistance for adjusting cyclic pitch of the blades of the rotary wing, said operations of said control device being damped by haptic feedback defined according to a predetermined damping force relationship, wherein said damping force relationship for operating the manual flight control device is predetermined as a function of an instantaneous load factor of the hybrid helicopter in such a manner that this instantaneous load factor is maintained between its minimum and maximum limit values in proportion to a position of said thrust control member between its minimum and maximum thrust values.
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9. A hybrid helicopter including at least one damper, wherein the helicopter includes at least one damper motor;
- a haptic feedback system for operating at least one manual flight control device being suitable to adjust a cyclic pitch of the blades of a rotary wing of the hybrid helicopter via power assistance, said hybrid helicopter comprising at least a fuselage, said rotary wing, and a fixed wing having anti-torque differential thrust propulsion arrangements distributed symmetrically thereon on either side of the fuselage, a manual thrust control member being provided so that operating it controls said thrust arrangements between maximum and minimum thrust positions, said hybrid helicopter further including an autopilot functionally connected to the power assistance so as to participate in said cyclic pitch adjustment of said blades of the rotary wing, and said manual control device being arranged in such a manner that operating it is damped by haptic feedback defined according to a predetermined damping force relationship; and
in order to predetermine said predetermined damping force relationship in proportion to a position of said thrust control member between the minimum and maximum thrust values, a flight-attitude changing linkage to which said damping force relationship is to be applied is incorporated in said hybrid helicopter in parallel with another flight-attitude changing linkage for changing thrust and provided with said control member. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
- a haptic feedback system for operating at least one manual flight control device being suitable to adjust a cyclic pitch of the blades of a rotary wing of the hybrid helicopter via power assistance, said hybrid helicopter comprising at least a fuselage, said rotary wing, and a fixed wing having anti-torque differential thrust propulsion arrangements distributed symmetrically thereon on either side of the fuselage, a manual thrust control member being provided so that operating it controls said thrust arrangements between maximum and minimum thrust positions, said hybrid helicopter further including an autopilot functionally connected to the power assistance so as to participate in said cyclic pitch adjustment of said blades of the rotary wing, and said manual control device being arranged in such a manner that operating it is damped by haptic feedback defined according to a predetermined damping force relationship; and
Specification