Fixed blading for air flow distribution in low pressure turbine of turboshaft engine, has annular sealing plate brought back on annular inner platform at upstream side of radial partition of inner platform with respect to air flow

摘要

The blading (10) has a coaxial annular inner platform (12) and an annular outer platform interconnected by radial blades (11). The inner platform includes an annular radial partition (120) and a blade support crown (121) extending from either side of a radially outer end of the partition. An annular sealing plate (20) is brought back on the inner platform at an upstream side of the radial partition with respect to an air flow. The sealing plate is attached to the blade support crown, where the sealing plate includes a circumferential groove. An independent claim is also included for a method for manufacturing the blading.