IP Library Granted Patent US 10,557,477
Granted Patent B2
US 10,557,477 · App. 15/113,870 · Granted Feb 11, 2020

Gas turbine engine airfoil

Inventors: Edward J. Gallagher (West Hartford, CT); Lisa I. Brilliant (Middletown, CT); Joseph C. Straccia (Middletown, CT); Stanley J. Balamucki (The Villages, FL); Mark A. Stephens (Wethersfield, CT); Kate Hudon (Superior, CO)
Assignee: UNITED TECHNOLOGIES CORPORATION
F04D29/324F01D25/24F02C3/04F02C7/36F02K3/06F04D29/325F04D29/38F05D2220/32F05D2240/35
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Quick Facts
Patent No.
US 10,557,477
App. No.
15/113,870
Granted
Feb 11, 2020
Kind
B2
Abstract

A compressor airfoil of a turbine engine having a geared architecture includes pressure and suction sides that extend in a radial direction from a 0% span position to a 100% span position. The airfoil has a relationship between a tangential stacking offset and span position that defines a curve that is non-linear.

Claims (11)

1. A gas turbine engine comprising:

a combustor section arranged between a compressor section and a turbine section, wherein the compressor section includes at least a low pressure compressor and a high pressure compressor, the high pressure compressor arranged upstream of the combustor section;

a fan section having an array of twenty-six or fewer fan blades, wherein the fan section has a fan pressure ratio of less than 1.55, wherein the low pressure compressor is downstream from the fan section, the low pressure compressor is counter-rotating relative to the fan blades;

a geared architecture coupling the fan section to the turbine section or the compressor section; and

an airfoil arranged in the low pressure compressor and including pressure and suction sides extending in a radial direction from a 0% span position to a 100% span position, wherein the airfoil has a relationship between a tangential stacking offset and span position that defines a curve that is non-linear, wherein the curve transitions from the positive slope to the negative slope in a range of 60% span to 75% span.

2. The gas turbine engine according to claim 1 , wherein the gas turbine engine is a two-spool configuration.

3. The gas turbine engine according to claim 1 , wherein the airfoil is rotatable relative to an engine static structure.

4. The gas turbine engine according to claim 1 , wherein the curve has a negative slope from 90% span to 100% span.

5. The gas turbine engine according to claim 4 , wherein the curve has a negative slope from 80% span to 100% span.

6. The gas turbine engine according to claim 1 , wherein the curve has a positive slope beginning at 0% span, where the positive slope leans toward the suction side.

7. The gas turbine engine according to claim 6 , wherein the positive slope extends from 0% span to 40% span.

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 Jul 25, 2016
From: GALLAGHER, EDWARD J.; BRILLIANT, LISA I.; STRACCIA, JOSEPH C.; BALAMUCKI, STANLEY J.; STEPHENS, MARK A.; HUDON, KATE
To: UNITED TECHNOLOGIES CORPORATION
Reel/Frame 039240/0974 →
Continuity (2)
Provisional Application 61941706 · Feb 19, 2014
Related Publication 20160341211A1 · Nov 24, 2016