# US 10,480,323 B2 · Gas turbine engine turbine blade airfoil profile > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,323 B2 - Document ID: US10480323B2 - Status: Granted - Kind: B2 - Application number: 14/993,528 - Filed: 2016-01-12 - Published: 2017-07-13 - Granted: 2019-11-19 - Earliest claimed: 2016-01-12 - Assignees: United Technologies Corporation - Applicants: United Technologies Corporation - Inventors: Wolfgang Balzer - Web page: https://patentgrep.com/patent/US10480323B2 ## CPC - F01D 5/141: {Shape, i.e. outer, aerodynamic form (F01D5/148 - F01D5/20 take precedence; blade construction F01D5/147)} - F05D 2250/74: given by a set or table of xyz-coordinates - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A turbine blade for a gas turbine engine according to an example of the present disclosure includes, among other things, an airfoil including leading and trailing edges joined by spaced apart pressure and suction sides to provide an exterior airfoil surface extending from a platform in a radial direction to a tip. The external airfoil surface is formed in substantial conformance with multiple cross-sectional profiles of the airfoil described by a set of Cartesian coordinates. ## Claims ### Claim 1 A turbine blade for a gas turbine engine comprising: an airfoil including leading and trailing edges joined by spaced apart pressure and suction sides to provide an exterior airfoil surface extending from a platform in a radial direction to a tip; and wherein the external airfoil surface is formed in substantial conformance with multiple cross-sectional profiles of the airfoil described by a set of Cartesian coordinates set forth in Table 1, the Cartesian coordinates provided by an axial coordinate scaled by a local axial chord, a circumferential coordinate scaled by a local axial chord, and a span location, wherein the local axial chord corresponds to a width of the airfoil between the leading and trailing edges at the span location. ### Claim 2 (depends on 1) The turbine blade according to claim 1, wherein the airfoil is a second stage turbine blade. ### Claim 3 (depends on 1) The turbine blade according to claim 1, wherein the span location corresponds to a distance from a rotational axis of the airfoil. ### Claim 4 (depends on 1) The turbine blade according to claim 1, wherein the Cartesian coordinates in Table 1 have a tolerance relative to the specified coordinates of ±0.030 inches (±0.762 mm). ### Claim 5 A turbine section for a gas turbine engine comprising: a high pressure turbine configured to drive a compressor section; a low pressure turbine configured to drive a fan section; wherein the high pressure turbine includes an array of turbine blades, wherein at least one turbine blade includes an airfoil having leading and trailing edges joined by spaced apart pressure and suction sides to provide an exterior airfoil surface extending from a platform in a radial direction to a tip; and wherein the external airfoil surface is formed in substantial conformance with multiple cross-sectional profiles of the airfoil described by a set of Cartesian coordinates set forth in Table 1, the Cartesian coordinates provided by an axial coordinate scaled by a local axial chord, a circumferential coordinate scaled by a local axial chord, and a span location, wherein the local axial chord corresponds to a width of the airfoil between the leading and trailing edges at the span location. ### Claim 6 (depends on 5) The gas turbine engine according to claim 5, wherein the array is a second stage array of turbine blades. ### Claim 7 (depends on 6) The gas turbine engine according to claim 6, wherein the high pressure turbine includes an array of fixed stator vanes upstream from the first stage array of turbine blades. ### Claim 8 (depends on 6) The gas turbine engine according to claim 6, wherein the second stage array of turbine blades includes forty-four turbine blades. ### Claim 9 (depends on 5) The gas turbine engine according to claim 5, wherein the span location corresponds to a distance from a rotational axis of the airfoil. ### Claim 10 (depends on 5) The gas turbine engine according to claim 5, wherein the Cartesian coordinates in Table 1 have a tolerance relative to the specified coordinates of ±0.030 inches (±0.762 mm). ### Claim 11 (depends on 5) The gas turbine engine according to claim 5, wherein the high pressure turbine includes two arrays of turbine blades and two arrays of fixed stator vanes. ### Claim 12 A gas turbine engine comprising: a compressor section; a combustor fluidly connected to the compressor section; a turbine section fluidly connected to the combustor, the turbine section comprising a high pressure turbine coupled to the compressor section via a shaft, and a low pressure turbine aft of the high pressure turbine; wherein the high pressure turbine includes an array of turbine blades, wherein at least one turbine blade includes an airfoil having leading and trailing edges joined by spaced apart pressure and suction sides to provide an exterior airfoil surface extending from a platform in a radial direction to a tip; and wherein the external airfoil surface is formed in substantial conformance with multiple cross-sectional profiles of the airfoil described by a set of Cartesian coordinates set forth in Table 1, the Cartesian coordinates provided by an axial coordinate scaled by a local axial chord, a circumferential coordinate scaled by a local axial chord, and a span location, wherein the local axial chord corresponds to a width of the airfoil between the leading and trailing edges at the span location. ### Claim 13 (depends on 12) The gas turbine engine according to claim 12, wherein the array is a second stage array of turbine blades. ### Claim 14 (depends on 13) The gas turbine engine according to claim 13, wherein the high pressure turbine includes an array of fixed stator vanes upstream from the first stage array of turbine blades. ### Claim 15 (depends on 13) The gas turbine engine according to claim 13, wherein the second stage array of turbine blades includes forty-four turbine blades. ### Claim 16 (depends on 12) The gas turbine engine according to claim 12, wherein the span location corresponds to a distance from a rotational axis of the airfoil. ### Claim 17 (depends on 12) The gas turbine engine according to claim 12, wherein the Cartesian coordinates in Table 1 have a tolerance relative to the specified coordinates of ±0.030 inches (±0.762 mm). ### Claim 18 (depends on 12) The gas turbine engine according to claim 12, wherein the high pressure turbine includes two arrays of turbine blades and two arrays of fixed stator vanes. ### Claim 19 (depends on 12) The gas turbine engine according to claim 12, wherein the low pressure turbine includes between three and six stages of turbine blades. ### Claim 20 (depends on 12) The gas turbine engine according to claim 12, comprising: a fan section including a plurality of fan blades; and a geared architecture configured to cause the fan section to rotate at a lower speed than the low pressure turbine.