Method for manufacturing a hollow turbomachine blade
AssigneeSafran Aircraft Engines
InventorsMaxime Marie Désiré Blaise, Celia Iglesias Cano, Lucas Antoine Christophe Lauwick
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Abstract
A method for manufacturing hollow composite material turbomachine part, includes producing a fibrous blank in one piece by three-dimensional weaving of yarns, the blank including at least one de-bonded zone forming an internal cavity, inserting a shaping part into the internal cavity of the fibrous blank in order to obtain a preform, densification of the preform by a matrix in order to obtain a structure having a fibrous reinforcement consisting of the preform densified by the matrix, wherein the shaping part is flexible and wherein the shaping part is mechanically withdrawn from the structure after the densification.
Claims12
A method for manufacturing a turbomachine hollow composite material part, comprising:
- producing a fibrous blank in one piece by three-dimensional weaving of yarns, said fibrous blank comprising at least one de-bonded zone forming an internal cavity,
- inserting a shaping part into the internal cavity of the fibrous blank in order to obtain a preform, and
- densification of the preform by a matrix in order to obtain a structure having a fibrous reinforcement consisting of said preform densified by said matrix,
- mechanically withdrawing the shaping part from the structure after the densification step,
- wherein the shaping part is flexible and comprises a first material which has a Shore A hardness between 30 and 80 and a second material having different hardness, the first material being present on either side of the second material, and
- wherein the first material completely surrounds the second material and the second material is more rigid than the first material.
Dependencies are inferred from the claim text.