Structure for linking and supporting a turbine engine on an aircraft pylon
A structure for linking and supporting a turbine engine on an aircraft pylon, the structure having a first longitudinal axis intended to extend parallel to a second longitudinal axis of the pylon, the structure including a first axial portion for fastening to the pylon, the first portion having an upper end that defines a substantially horizontal plane of interface with the pylon, and a lower end bearing suspension rods for suspending the turbine engine, which extend in a rear vertical plane; and a second axial portion that is intended to extend forward of the pylon and includes at least one suspension member of the turbine engine in a front vertical plane.
1 . A structure for linking and supporting a turbine engine to an aircraft pylon, the structure having a first axis of elongation intended to extend parallel to a second axis of elongation of the pylon, the structure comprising:
a first axial segment for fastening to the pylon, this first segment comprising an upper end which defines a substantially horizontal plane of interface with the pylon, and a lower end carrying suspension connecting rods which are intended to be connected to the turbine engine and which extend in a first substantially vertical plane, referred to as the rear plane, and
a second axial segment which is intended to extend in front of the pylon and comprising at least one suspension member which is intended to be connected to the turbine engine and which extends in a second substantially vertical plane, referred to as the front plane, this front plane being at an axial distance from the rear plane,
wherein the second segment comprises an upper platform for fastening at least one root of a rectifier vane.
2 . The linking structure according to claim 1 , wherein said at least one suspension member is located at a free front end of the second segment.
3 . The linking structure according to claim 2 , wherein said at least one suspension member is a snout which comprises:
a connecting rod for fastening to the turbine engine, which extends in said front plane, and
a cylindrical body which is engaged in a housing of the free end of the second segment and which is able to pivot in this housing about an axis parallel to said first axis of elongation.
4 . The linking structure according to claim 1 , wherein the first segment carries three suspension connecting rods in said rear plane, these three connecting rods comprising:
two lateral connecting rods extending respectively on either side of the first segment, symmetrically with respect to a vertical median plane passing through said first axis of elongation, and
a central connecting rod located under the first segment.
5 . The linking structure according to claim 1 , wherein the second segment comprises an upper platform for fastening at least one root of a rectifier vane.
6 . The linking structure according to claim 1 , wherein, the rectifier vane being of variable pitch, the structure comprises a mechanism for guiding the root of the vane and/or an actuation system.
7 . The linking structure according to claim 1 , wherein said front plane is located upstream of or perpendicular to leading edges of the vanes, and the rear plane is located downstream of trailing edges of the vanes.
8 . An assembly comprising an aircraft turbine engine and a linking structure according to claim 1 , the turbine engine being configured to be mounted in a cantilevered manner on a pylon by means of this linking structure.
9 . The assembly according to claim 8 , wherein the turbine engine has a longitudinal axis and comprises a gas generator comprising, from upstream to downstream, in the direction of flow of the gases, at least one compressor, an annular combustion chamber and at least one turbine, the gas generator defining a main annular duct for the flow of a first air flow, and the gas generator being intended to be surrounded by a secondary annular duct for a second air flow, the gas generator driving a propeller and the linking structure being fastened to the gas generator so that its axis of elongation is located at a radius measured with respect to the longitudinal axis, which is between the minimum radius (Rmin) and the maximum radius (Rmax) of the propeller.
10 . The assembly according to claim 8 , wherein the turbine engine comprises an annular row of rectifier vanes which is located in the secondary duct, the second segment of the structure being located between two adjacent vanes of that row of vanes or carrying one of the vanes of that row of vanes.
11 . The assembly according to claim 10 , wherein said front plane is located upstream of or perpendicular to leading edges of the vanes of the row of vanes, and/or said rear plane is located downstream of trailing edges of the vanes of the row of vanes.
12 . The assembly according to claim 8 , wherein it further comprises a pylon having a second axis of elongation and comprising a front end for fastening to the first segment of the structure.
13 . The assembly according to claim 1 , wherein the upper platform carry a root blank configured to be fastened to the root of the rectifier vane.