Composite material turbine engine blade equipped with a seal and its production process
AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorsMonique A. Thore, Pascal C. M. A. Vasseur
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Abstract
A turbine engine blade made from a composite material and having at a free end thereof an integrated brush joint. A process for producing such a blade includes the steps of: introducing a fibrous fabric into a mold, introducing specific fibres into the mold, in the vicinity of the free end of the blade, injecting a resin into the mold, performing polymerization by use of a heating press of the resin-impregnated fibrous fabric.
Claims8
A molded composite machine turbine engine blade, which comprises:
- a multidirectional fibrous fabric blade impregnated with a resin and having a blade body wherein at a free end of the blade body, a seal is integrated into the resin and forms a brush joint between the blade body and a casing.
A molded composite machine turbine engine blade, which comprises:
- a multi-directional fibrous fabric blade impregnated with a resin and having a blade body wherein at a free end of the blade body, a seal is integrated into the resin, said seal comprising a plurality of fibers which are partly integrated into the resin and partly external of the blade body, and said fibers forming a brush, wherein said fibers are integrated into the resin at an angle .alpha. opposite to the turbine engine rotation direction.
Process for producing a composite material turbine engine blade having a seal, which comprises:
- introducing a fibrous fabric into a mold,
- introducing fibers into the mold in proximity with a longitudinal free end of said blade,
- injecting a resin into the mold so as to form the blade such that said fabric has free ends which extend from said longitudinal free end of said blade,
- performing polymerization under a heating press of the resin-impregnated fibrous fabric.
Dependencies are inferred from the claim text.