A blade platform and a fan disk for an aviation turbine engine
AssigneeSafran Aircraft Engines
InventorsThomas Alain DE GAILLARD, ALEXANDRE Bernard Marie BOISSON
Life of this patent
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Abstract
A platform suitable for being interposed between two adjacent blades of a fan, and including a passage wall, a bottom wall, and axial and radial retention surfaces. The passage wall defines a fan air flow passage, the bottom wall presents a main surface for bearing against a fan disk, and the axial and radial retention surfaces are arranged at the two axial ends of the platform. The radial retention surface arranged at the upstream axial end of the platform is radially offset from the main surface of the bottom wall in the direction in which the bottom wall bears against the disk.
Claims10
A platform suitable for being interposed between two adjacent blades of a fan, the platform comprising:
- a passage wall for defining a fan air flow passage;
- a bottom wall having a main surface for bearing against a fan disk;
- the platform having axial and radial retention surfaces arranged at the two axial ends of the platform, the radial retention surface arranged at the upstream axial end of the platform being radially offset from the main surface of the bottom wall in the direction in which the bottom wall bears against the disk, wherein the bottom wall has an inclined surface inclined relative to the main surface of the bottom wall and connecting the main surface of the bottom wall in continuous manner with the radial retention surface arranged at the upstream axial end of the platform.
A disk suitable for supporting platforms and blades of a fan, and comprising:
- an outer surface presenting a succession of slots for receiving fan blades and of teeth interposed between the slots in order to support the fan platforms;
- an upstream face of the disk;
- and
- a plurality of axial projections arranged radially around the axis A of the disk on the upstream face of the disk, and suitable for being fastened to a fan platform retention flange, the projections being radially offset towards the inside of the disk relative to the teeth of the disk, wherein upstream axial ends of the teeth of the disk present surfaces are chamfered.
Dependencies are inferred from the claim text.