Abstract: A device for the in situ angular positioning of an incidence probe, e.g., of the weather vane type, equipped with a vane and mounted, e.g., on an airplane. According to the device, the axis of rotation of the probe is used directly as a positioning reference. The angular-positioning device include a fixed structure secured to the wall of the airplane, of annular shape and including a circular track for a moving slider. The vane is immobilized in an enveloping structure. A coupling member coupling the slider and the enveloping structure is fixed to the enveloping structure. Coupling is afforded by a flat spring leaf including a stud at its end. The stud is slipped into a slit of the slider, which allows the vane to be driven about its axis of rotation. The position is measured using a digital inclinometer.

Abstract: The invention relates to a device for the in situ angular positioning of an incidence probe (1) of the weather vane type, equipped with a vane (121) and mounted on an airplane (Av). According to the invention, the axis of rotation (&Dgr;s) of the probe (12) is used directly as a positioning reference. The angular-positioning device comprises a fixed structure (3) secured (33-330-331, 34-340-341) to the wall of the airplane (Av), of annular shape (30) and comprising a circular track (31, 32) for a moving slider (4). The vane (121) is immobilized in an enveloping structure (5a). A coupling member (7) coupling the slider (4) and the enveloping shape (5a) is fixed to the latter. Coupling is afforded by a flat spring leaf (71) comprising a stud (72) at its end. The stud (72) is slipped into a slit (412) of the slider (4), which allows the vane (121) to be driven about its axis of rotation (&Dgr;s). The position is measured using a digital inclinometer (6).