Manufacturing a blade by removing at least one skin

Abstract

Manufacturing a blade by unframing at least one skin. The invention relates to a method for manufacturing a fibrous preform (300) of a blade comprising: - the creation of a one-piece fibrous texture by weaving comprising a foot portion and an aerodynamic profile portion, the aerodynamic profile portion comprising a core (10) produced by three-dimensional weaving and at least one first unbinding separating, along the thickness direction (DE), a first skin (111) from the core (10), the first skin (111) of the aerodynamic profile portion (102) being produced by two-dimensional weaving, - unframing the first skin (111) along the longitudinal direction (DL) so as to obtain a non-zero unframing angle between the extension direction of the weft yarns (t111) of the first skin (111) and the extension direction of the weft yarns (t10) of the core (10). Figure for the abstract: Fig. 4

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