Foil, rotor blade, assembly for a turbomachine rotor and rotor
AssigneeSafran Aircraft Engines
InventorsNicolas Daniel Delaporte, Pierre Marie Mulheim, Arnaud Martine, Antoine Giguet, Vincent Goyon
Life of this patent
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Abstract
A foil and a root of a blade of a turbomachine rotor and includes a base, two side limbs that are connected to each other by the base, at least the first limb includes at least one recess including at least two folds in two different directions, the recess being capable of engaging with a notch provided in the root of the blade to ensure the foil is longitudinally retained relative to the root of the blade at least in a longitudinal direction.
Claims9
A foil for being mounted to a root of a blade of a turbomachine rotor and comprising:
- a base,
- a first side leg and a second side leg connected together through the base,
- wherein at least the first leg comprises at least one recess comprising at least two folds in two different directions, the at least one recess being able to cooperate with a notch provided in the root of the blade to ensure that the foil is longitudinally held relative to the root of the blade at least in one longitudinal direction.
A blade of a rotor movable about an axis of rotation, comprising an inner platform, a vane radially extending from the inner platform and a root of the blade radially extending from this inner platform opposite to the vane, the root of the blade comprising:
- a first radial face,
- a second radial face opposite to the first radial face longitudinally
- a first side longitudinal face joining each radial face
- a second side longitudinal face joining each radial face,
- at least one flank on each side longitudinal face, comprising a seat for bearing against a surface of a housing of the root of the blade,
- wherein at least the first side longitudinal face has a notch comprising at least one longitudinal stop surface extending in a plane intersecting the axis of rotation and a guide surface extending in a direction other than the longitudinal stop surface, the notch being intended to receive a recess of a foil to ensure that the foil is longitudinally held relative to the root of the blade at least in a longitudinal direction,
- wherein the notch is located between and distant from each radial face, and
- wherein the root of the blade comprises a base portion comprising the seats and a restricted portion extending between the inner platform and the base portion, the restricted portion having a width less than the least width of the base portion and in that the notch extends from a planar surface of the side longitudinal face into the restricted portion, forming the longitudinal stop surface and a second longitudinal stop surface perpendicular to the lower surface and tilted with respect to the planar surface to ensure that the foil is longitudinally held relative to the root of the blade in the other longitudinal direction.
Dependencies are inferred from the claim text.