Device driving the flapping of a carrier plane

A combined flapping drive device for a foil such as a wing, submerged in a fluid, provided with a drive shaft called a bit, wherein the device comprises at least one device for movably and pivotably driving a primary shaft about its longitudinal axis, comprising said primary shaft and three systems operating in cooperation,

• a first system comprising means for movably driving a control member along a trajectory λ in the form of a closed curve, having at least a first axial component τ and a second axial component σ,
• a second system comprising means for pivotably driving, of heel angle φ, said primary shaft about its longitudinal axis, configured to be actuated by the movement of said control member mainly along the axial component τ of the trajectory λ defined by the first system, according to a main function Φ(τ) fixing φ;
• a third system comprising means for movably driving the primary shaft, configured to be actuated by the movement of said control member along mainly the second axial component σ of the trajectory λ defined by the first system,
• said control member being configured to extend protrudingly from the plane of its trajectory λ or a projection thereof in that plane and to engage both the means for pivotably driving the primary shaft and the means for movably driving said primary shaft, the movement of the control member along the closed curve generating both a pivotal control φ in one direction and then in the opposite direction of the primary shaft about its longitudinal axis and the movement of the primary shaft in one direction and in the opposite direction,
• the device further comprising a connecting system provided between said driving device of the primary shaft and the bit of the foil for transmitting the combined movement and pivoting motions of the primary shaft to this bit.

A device for movably and pivotably reciprocatingly driving a primary shaft about its longitudinal axis, wherein the device comprises a primary shaft and three co-operating systems,

• a first system comprising means for movably driving a control member along a trajectory λ in the form of a closed curve, having at least a first axial component τ and a second axial component σ,
• a second system comprising means for pivotably driving, of heel angle φ, said primary shaft about its longitudinal axis, configured to be actuated by the movement of said control member along at least one component of the trajectory defined by the first system;
• a third system comprising means for movably driving the primary shaft, configured to be actuated by the movement of said control member along at least the other component of the trajectory defined by the first system,
• said control member being configured to extend protrudingly from the plane of said axial components of its trajectory λ or a projection thereof in a plane and to be in engagement with both the means for pivotably driving the primary shaft and the means for movably driving said primary shaft, the movement of the control member along the closed curve generating both a pivotal control φ in one direction and then in the opposite direction of the primary shaft about its longitudinal axis and the movement of the primary shaft in one direction and in the opposite direction.