Composite turbine engine blade, eg fan blade, with a structural reinforcement on its leading edge

摘要

A V-section structural reinforcement 20 for the leading edge (12, fig.1) of a turbine engine fan blade made of composite material comprises a base 24 extending into two fins 26, 28 to be applied, eg using an adhesive, to the leading edge and the pressure/suction surfaces 16, 18 of the airfoil 10. The fins 26, 28 and/or the surfaces 16, 18 of the airfoil 10 are shaped to maintain an assembly space 30 between at least one of the fins 26, 28 and the airfoil 10 when the structural reinforcement 20 is in place on the airfoil 10. The cross-section of at least one surface of the airfoil, eg the suction surface 18, facing at least one fin 26, 28 is straight. The assembly space 30 extends from a contact zone 32 at the free end (27, fig.3), 29 of the fin 26, 28 toward a contact zone 34 the base 24 of the structural reinforcement 20. The assembly space 30, eg 100-300 microns, facilitates assembly of the convoluted three-dimensional parts and accommodates adhesive.