IP Library Granted Patent US 8,997,494
Granted Patent B2
US 8,997,494 · App. 13/664,647 · Granted Apr 7, 2015

Gas turbine engine fan blade airfoil profile

Inventors: Sue-Li Chuang (Glastonbury, CT); Yuan Dong (Glastonbury, CT); Sanjay S. Hingorani (Johns Creek, GA); Dilip Prasad (Newbury Park, CA)
Assignee: United Technologies Corporation
F04D29/384F01D5/141F05D2220/36F05D2250/74
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Quick Facts
Patent No.
US 8,997,494
App. No.
13/664,647
Granted
Apr 7, 2015
Kind
B2
Abstract

A fan blade for a gas turbine engine includes an airfoil that includes leading and trailing edges joined by pressure and suction sides to provide an exterior airfoil surface that extends 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 set forth in Table 1. The Cartesian coordinates are provided by an axial coordinate scaled by a local axial chord. A circumferential coordinate is scaled by the local axial chord, and a span location. The local axial chord corresponds to a width of the airfoil between the leading and trailing edges at the span location.

Claims (21)

1. A fan blade for a gas turbine engine comprising:

an airfoil including leading and trailing edges joined by pressure and suction sides to provide an exterior airfoil surface extending 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 the 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.

2. The fan blade according to claim 1 , wherein the airfoil includes an aluminum fan blade.

3. The fan blade according to claim 1 , wherein the span locations correspond to a position from a rotational axis of the airfoil in a numerical sequence indicated in Table 1 with the last position closest to the tip.

4. The fan blade according to claim 1 , wherein the Cartesian coordinates in Table 1 have a tolerance relative to the specified coordinates of ±0.050 inches (±1.27 mm).

5. 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 high pressure compressor via a shaft;

a low pressure turbine; and

a fan section operatively coupled to the turbine section, wherein the fan section includes an array of fan blades, wherein at least one fan blade includes an airfoil having leading and trailing edges joined by pressure and suction sides to provide an exterior airfoil surface extending from 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 the 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.

6. The gas turbine engine according to claim 5 , wherein the airfoil includes an aluminum fan blade.

7. The gas turbine engine according to claim 5 , wherein the span locations correspond to a position from a rotational axis of the airfoil in a numerical sequence indicated in Table 1 with the last position closest to the tip.

8. The gas turbine engine according to claim 5 , wherein the Cartesian coordinates in Table 1 have a tolerance relative to the specified coordinates of ±0.050 inches (±1.27 mm).

9. The gas turbine engine according to claim 5 , wherein the array of fan blades includes less than about twenty-six (26) fan blades.

10. The gas turbine engine according to claim 5 , wherein the array of fan blades includes less than about twenty (20) fan blades.

11. The gas turbine engine according to claim 5 , wherein the fan section is driven by a geared architecture.

12. The gas turbine engine according to claim 5 , wherein the gas turbine engine is a high-bypass geared gas turbine engine.

Assignments (4)
CHANGE OF NAME Recorded Jul 27, 2023
From: RAYTHEON TECHNOLOGIES CORPORATION
To: RTX CORPORATION
Reel/Frame 064714/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE AND REMOVE PATENT APPLICATION NUMBER 11886281 AND ADD PATENT APPLICATION NUMBER 14846874. TO CORRECT THE RECEIVING PARTY ADDRESS PREVIOUSLY RECORDED AT REEL: 054062 FRAME: 0001. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF ADDRESS. Recorded Mar 4, 2021
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 055659/0001 →
CHANGE OF NAME Recorded Sep 4, 2020
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 054062/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 31, 2012
From: CHUANG, SUE-LI; DONG, YUAN; HINGORANI, SANJAY S.; PRASAD, DILIP
To: UNITED TECHNOLOGIES CORPORATION
Reel/Frame 029216/0054 →
Continuity (2)
Provisional Application 61706859 · Sep 28, 2012
Related Publication 20140311149A1 · Oct 23, 2014