AIR-FLOW STRAIGHTENING ASSEMBLY HAVING IMPROVED AERODYNAMIC PERFORMANCES

摘要

The proposed invention is an air-flow straightening assembly for a turbine engine comprising: - a cylindrical platform (15) centred on an axis (X-X), - at least one straightener blade (20) extending from the platform, - a structural arm (30) extending radially relative to the axis, and - a mechanical member (40) protruding from the platform (15), said mechanical member (40) being one of the group comprising: - a radial shaft, - an angle transmission box of a radial shaft, - an electric, hydraulic or pneumatic connection element, - an intermediate gear driving a radial shaft, the straightening assembly further comprising a fairing (50) of the protruding mechanical member, the fairing having a three-dimensional surface defined by: - at least one upstream end point (Ai, Ae) located axially upstream from the mechanical member (40) relative to the direction of air flow in the turbine engine, and - at least one downstream end point (Ci, Ce) located axially downstream from the mechanical member, the three-dimensional surface being tangential to the platform at the upstream and downstream end points (Ai, Ae, Ci, Ce), and having a larger cross-section measured along an axis (Y-Y) orthogonal to the first, and in which the three-dimensional surface is further defined by two lateral end points (Bi, Be) corresponding to the ends of said larger cross-section respectively on the pressure side and suction side of the structural arm (30), the axial positions of said points being separated by at most 0.1 CQGV - in which COGV is the chord of the straightener blade (20).