Gas turbine engine including a rotating blade assembly
AssigneeGE Avio S.r.l.
InventorsRoberto Maddaleno, Matteo Renato Usseglio
Life of this patent
Estimating the term…
Abstract
A rotating blade assembly for a turbine engine having a drive shaft, the rotating blade assembly comprising a disc, at least one blade assembly, and a retainer. The disc being operably coupled to the drive shaft and including a seat having at least a portion of a first through hole. The at least one blade assembly having an upper platform, a lower platform, a dovetail extending from the lower platform, and a blade extending between the upper platform and the lower platform. The retainer assembly securing the disc to the at least one blade assembly and comprising a hollow tubular element, a pin, and a fastener.
Claims20
A rotating blade assembly rotatable about a rotational axis, the rotating blade assembly comprising:
- a disc including a seat having at least a portion of a first through hole;
- a blade assembly having an upper platform, a lower platform, a dovetail extending from the lower platform, and a blade extending between the upper platform and the lower platform;
- and
- a retainer assembly securing the disc to the blade assembly, the retainer assembly comprising:
- an expandable hollow tubular element defining a second through hole, which is aligned with the first through hole, the expandable hollow tubular element including a tubular wall and a plurality of fingers extending axially, with respect to the rotational axis;
- and
- a pin extending through at least a portion of the second through hole and the first through hole, and confronting at least a portion of the expandable hollow tubular element.
A rotating blade assembly rotatable about a rotational axis, the rotating blade assembly comprising:
- a disc including a seat having at least a portion of a first through hole;
- a blade assembly having an upper platform, a lower platform, a dovetail extending from the lower platform, and a blade extending between the upper platform and the lower platform;
- and
- a retainer assembly securing the disc to the blade assembly, the retainer assembly comprising:
- an expandable hollow tubular element defining a second through hole, which is aligned with the first through hole, the expandable hollow tubular element including a tubular wall defining the second through hole, the tubular wall having a first section with an increased cross-sectional area to define a portion of the second through hole with a decreased cross-sectional area when viewed along a plane extending along the rotational axis and intersecting the expandable hollow tubular element;
- and
- a pin extending through at least a portion of the second through hole and the first through hole, and confronting at least a portion of the expandable hollow tubular element, the pin having a second section with a decreasing cross-sectional area when viewed along a plane extending along the rotational axis and intersecting the pin.
A rotating blade assembly for a turbine engine having a drive shaft, the rotating blade assembly comprising:
- a disc operably coupled to the drive shaft and including a seat having at least a portion of a first through hole, the disc including a dovetail connection extending from a remainder of the disc in a span-wise direction;
- a blade assembly having an upper platform, a lower platform, a dovetail extending from the lower platform, and a blade extending between the upper platform and the lower platform, the dovetail connection extending through a corresponding portion of the dovetail;
- and
- a retainer assembly securing the disc to the blade assembly, the retainer assembly comprising:
- a hollow tubular element defining a second through hole, which is aligned with the first through hole;
- and
- a pin extending through at least a portion of the second through hole and the first through hole, and confronting at least a portion of the hollow tubular element.
Dependencies are inferred from the claim text.