Nozzle for turbine i.e. low pressure turbine, of turboshaft engine e.g. turbopropeller of airplane, has annular wall whose annular rib extends radially toward outer side to ensure axial sealing between annular wall and turbine casing rail

摘要

The nozzle has blades whose external ends are radially connected to an annular platform (118) that comprises an upstream hooking unit (122) and a downstream hooking unit (124) on a casing of a turbine (114). The downstream hooking unit comprises an annular wall (130) includes a cylindrical downstream edge (132). An annular rib (156) of the annular wall extends radially toward outer side for ensuring axial sealing between the annular wall and a rail of the casing of the turbine. Independent claims are also included for the following: (1) a turbine for a turboshaft engine (2) a turboshaft engine.