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US 8,801,384 B2Granted
Airfoil attachment holding an airfoil root in a broach fitting
AssigneeSnecma
InventorsAdrien Jacques Philippe Fabre, Jean-Noel Mahieu, David Marsal
Life of this patent
Estimating the term…
Abstract
An airfoil attachment including a support and flanks rising on it to delimit a broach compartment designed to receive and hold an airfoil root is provided. The flanks are machined so as to separate the portions 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
An attachment for an airfoil comprising:
- a flat support that is perpendicular to a direction of the airfoil;
- and
- two opposite flanks that rise up on the support delimiting a broach compartment in which a root of the airfoil is retained, the flanks being inclined towards each other from the support such that the compartment communicates to an exterior through a clamped opening and the flanks presenting overhanging regions which bear against the root of the airfoil when centrifugal force is applied on the airfoil,
- wherein each of the flanks is divided into portions in a longitudinal direction of the compartment by at least one transverse notch from a free upper edge of the flank at a distance from the support, leading to a region adjacent to the support, the transverse notch extending through the free upper edge and the overhanging regions of both flanks and into a bottom of the compartment.
1 more element
Dependencies are inferred from the claim text.