METHOD FOR MANUFACTURING A VARIABLE PITCHING BLADE FOR A TURBOMACHINE

Abstract

A method for manufacturing a variable-pitch turbine blade (7) for a turbomachine, comprising: a) preparation of the fibrous structure (20), in particular by fiber weaving; b) compaction of the attachment portion (23) of the fibrous structure (20) to reduce its diameter relative to the pitch axis (Y); c) insertion of the compressed attachment portion (23) into the sleeve (13) and shaping of the attachment portion (20); and d) injection of a first polymerizable resin into the fibrous structure (20), the method comprising, between steps a) and b), a step i) of impregnating the attachment portion (23) of the fibrous structure (20) with two different impregnation solutions (S1, S2). Figure 3 (for the abstract)