EFFORT RETURN MECHANISM FOR A MINIMAL STEERING A AIRCRAFT, AND DEVICE FOR CONTROLLING AN AIRCRAFT, COMPRISING SUCH A MECHANISM

摘要

This force return mechanism (1) comprises a fixed frame (10) intended to be secured to a chassis of the aircraft, at least one spring (60, 61) opposing the displacement of the mini-stick (2) relative to to the frame, and mechanical motion transmission means (20, 30, 40, 41, 50, 51) carried by the frame movably and adapted to transmit a rotational movement about a first axis of rotation ( X1), between the minimap and the spring or springs by applying a force law in which the resistance force, the spring or springs, via the transmission means, oppose the rotary displacement of the mini-stick around the first axis of rotation. , is dependent on the angular position of the minimap around the first axis of rotation, this force law including at least one force jump which corresponds to a discontinuity of the intensity of the resistance force without a change in direction of this resistance effort. In order for this force return mechanism to be more precise, more compact and more reliable, the transmission means comprise a cam (30), which is connected to the rotational minimap around the first axis of rotation and which is provided for each spring, a profiled surface (32, 33) which is shaped to define at least a portion of the law of effort, including its or jumps effort.