Airfoil attachment holding an airfoil root in a broach fitting
AssigneeSnecma
InventorsAdrien Jacques Philippe FABRE, Jean-Noël MAHIEU, David MARSAL
Life of this patent
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Abstract
Airfoil attachment comprising a support (3) and flanks (13, 14) rising on it to delimit a broach compartment (15) designed to receive and hold an airfoil root. The flanks (13, 14) are machined (21, 22) so as to separate the portions (23, 24 and 25) and prevent a complete break of a flank and detachment of the airfoil when a crack develops because the crack is stopped by one of the notches.
Claims10
Attachment (30) for an airfoil (4) comprising a support (3) and two opposite flanks (13, 14) that rise up on the support delimiting a broach compartment (15), characterised in that each of the flanks is divided into portions (23, 24, 25) by at least one notch (21, 22) from an upper edge at a distance from the support, leading to a region adjacent to the support.
Airfoil attachment according to any one of the previous claims, characterised in that it is a pivot comprising a pivoting pin (6) extending under the support (3).
Airfoil assembly, characterised in that it comprises an attachment according to any one of the previous claims, and an airfoil (4) comprising a root (5) engaged in the compartment and an aerodynamic part rising from the root through an opening of the compartment.
Dependencies are inferred from the claim text.