Compressor stator vane
AssigneeALSTOM Technology Ltd
InventorsYong Wang, James Page Strohl
Life of this patent
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Abstract
A compressor component having a non-linear thickness distribution along the span length is disclosed. By altering the thickness distribution to a non-linear arrangement so as to locally increase airfoil thickness proximate a mid-span location, the natural frequency of the airfoil is increased so as to not coincide with a critical engine order of the compressor. Further, the present invention provides a novel airfoil profile in accordance with the coordinates of Table 1. The present invention also includes a carrier segment or disk fabricated from a material so as to eliminate corrosion with the compressor component.
Claims17
A compressor component comprising:
- an attachment;
- an airfoil extending radially outward from the attachment, the airfoil having a leading edge and a trailing edge with the trailing edge spaced a distance from the leading edge and separated by concave and convex surfaces, the airfoil having a thickness between the concave surface and convex surface wherein the thickness varies non-linearly along an airfoil span, as measured in a radial direction from the attachment to an airfoil tip;
- wherein the thickness at approximately 15%-25% along the airfoil span is greater than the thickness at approximately 35% along the airfoil span and the thickness at least approximately 40%-80% along the airfoil span is greater than the thickness at approximately 15-25% along the airfoil span.
A compressor component having an attachment and an airfoil extending radially outward from the attachment, the airfoil having an uncoated profile substantially in accordance with Cartesian coordinate values of X and Y, for each distance Z in inches as set forth in Table 1, wherein Z is a distance measured radially outward from a bottom face of the attachment, the X and Y coordinate values being joined in smooth continuing splines to form airfoil sections and the airfoil sections joined smoothly to form the profile.
A compressor stator vane having an increased natural frequency comprising:
- an attachment;
- and
- an airfoil extending radially outward from the attachment, the airfoil having a thickness that varies non-linearly along a span length of the airfoil such that the thickness has at least a first maximum thickness at approximately 20% along the span, a second maximum thickness at approximately 60% along the span, and a reduced thickness portion positioned along the airfoil span between the first maximum thickness and the second maximum thickness, wherein the second maximum thickness is greater than the first maximum thickness.
Dependencies are inferred from the claim text.