Turbine blade attachment curved rib stiffeners
AssigneeUnited Technologies Corporation
InventorsCharles Thistle, Mohamed Hassan
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a fir tree coupling for gas turbine engine parts comprising a load beam having a longitudinal axis, a rounded base, a first side, and a second side, wherein the rounded base has a radius of curvature from the first side to the second side, a tooth running parallel to the longitudinal axis and disposed on the first side of the load beam. The fir tree coupling may comprise a channel through the rounded base across a portion of the radius of curvature from the first side to the second side. The channel may comprise a sidewall having a sidewall step cut into a portion of the channel sidewall.
Claims18
A fir tree coupling comprising:
- a load beam having a longitudinal axis, a rounded base, a first side, and a second side, wherein the rounded base has a radius of curvature from the first side to the second side, a tooth running parallel to the longitudinal axis and disposed on the first side of the load beam, and a plurality of channels, extending transverse to the longitudinal axis from the first side to the second side of the load beam, defining a plurality of rounded base portions therebetween.
A turbine blade assembly for a gas turbine engine comprising:
- a platform having a dorsal surface and a ventral surface;
- a turbine blade extending from the dorsal surface;
- a fir tree coupling extending from the ventral surface, the fir tree coupling comprising a load beam having a longitudinal axis, a rounded base, a first side, and a second side,
- wherein the rounded base has a radius of curvature from the first side to the second side,
- a tooth running parallel to the longitudinal axis and disposed on the first side of the load beam,
- and a plurality of channels, extending transverse to the longitudinal axis from the first side to the second side of the load beam, defining a plurality of rounded base portions therebetween.
A method of manufacturing a fir tree coupling comprising:
- forming a load beam having a longitudinal axis, a rounded base, a first side, a second side, and tooth running parallel to the longitudinal axis and disposed on the first side of the load beam,
- forming a radius of curvature on the rounded base from the first side to the second side, and
- forming a plurality of channels, extending transverse to the longitudinal axis from the first side to the second side of the load beam and across the radius of curvature, defining a plurality of rounded base portions therebetween.
Dependencies are inferred from the claim text.