Improvement of the retention capacity of a dovetail root of a turbomachine blade

摘要

The process involves modifying an attachment between a journal of an upper lip (5) and a base (8) of a groove (7) by raising the material of a disc (12). The disc is equipped with upper and lower flanks, where the upper flank includes a voluminous lug (31) in order to increase the value of ray (R) in a geometric circle (C) centered on a pivoting axis of a blade and the value of the distance of a crescent (e).