Method for checking the position of a preform in a mould

A blade preform obtained by weaving a single piece, said weave being a three-dimensional yarn weave, said preform comprising a blade root part and a blade vane part, wherein it comprises a position marker inserted into the weave of said preform and wherein the blade root part of the preform comprises a zone configured to undergo a cutting operation to obtain a finished blade, and in that said position marker of said preform is inserted into said zone.

An impregnation mould for manufacturing a blade from composite material for a turbine engine, comprising a lower mould part having a recess of substantially longitudinal orientation that substantially matches a lower part of a blade preform, and an upper part having a recess of substantially longitudinal orientation that substantially matches an upper part of the blade preform, said upper part being able to be placed on said lower part, wherein it comprises an insert, which is intended to be fixed by a first end in a clear position relative to the lower part of the mould,

• which is intended to extend substantially longitudinally above the recess of the lower part of the mould,
• which comprises at least one second opposite end comprising at least one transverse wall able to form a reference mark when the upper part of the mould is not placed on said lower part of the mould, which is able to be fully received in a matching cavity of an upper part of the mould when said upper part is placed on said lower part, and
• which comprises at least one wall flush with the inside of the recess of said upper part, which wall is configured to define part of said recess of said upper part and to compact the preform inside said mould.