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US 2019/0161166 A1Published application
Fairing ring for a bladed wheel
AssigneeSafran Aircraft Engines
InventorsThomas Alain DE GAILLARD, Alexandre Bernard Marie BOISSON, Claire Marie FIGEUREU
Life of this patent
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Abstract
A fairing ring for a bladed wheel is disclosed. The fairing ring includes an annular wall extending axially, the wall presenting a plurality of notches extending axially, each notch being configured to receive a leading edge or a trailing edge of a blade.
Claims9
1:
- A fairing ring for a bladed wheel, the fairing ring comprising:
- an annular wall extending axially, said wall presenting a plurality of notches extending axially, each notch being configured to receive a leading edge or a trailing edge of a blade,
- wherein the inter-notch portions are made of composite material, the composite material being an assembly of at least two different materials that are not miscible, while the remainder of the ring is made of metal material, the metal material being a metal or a metal-based alloy.
2:
- A fairing ring according to claim 1, wherein each notch presents the shape of the profile of a leading edge or of a trailing edge of a blade.
3:
- A fairing ring according to claim 1, wherein each inter-notch portion is configured to deform plastically when subjected to a circumferential force that is greater than or equal to 40 kN±30%.
4:
- A fairing ring according to claim 1, including at least one wear portion configured to be placed facing a blade.
5:
- A fairing ring according to claim 1, including an annular wall extending radially and configured to mount said fairing ring on a disk of the bladed wheel.
6:
- A fairing ring according to claim 1, configured to be fitted with an inlet cone or an outlet cone of the bladed wheel.
7:
- A bladed wheel fitted with a fairing ring according to claim 1.
8:
- A bladed wheel according to claim 7, wherein the inter-notch portions of the fairing ring extend over not more than 15% of the axial length of the blades.
9:
- A turbomachine including a bladed wheel according to claim 7.