IP Library Granted Patent US 10,138,809
Granted Patent B2
US 10,138,809 · App. 14/592,991 · Granted Nov 27, 2018

Geared turbofan engine with a high ratio of thrust to turbine volume

Inventors: Frederick M. Schwarz (Glastonbury, CT); Daniel Bernard Kupratis (Wallingford, CT)
Assignee: United Technologies Corporation
F02C3/107F01D25/16F02C7/36F02K3/06F05D2220/327F05D2260/40F05D2260/40311
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Quick Facts
Patent No.
US 10,138,809
App. No.
14/592,991
Granted
Nov 27, 2018
Kind
B2
Abstract

A gas turbine engine turbine has a high pressure turbine configured to rotate with a high pressure compressor as a high pressure spool in a first direction about a central axis and a low pressure turbine configured to rotate with a low pressure compressor as a low pressure spool in the first direction about the central axis. A power density is greater than or equal to about 1.5 and less than or equal to about 5.5 lbf/cubic inches. A fan is connected to the low pressure spool via a speed changing mechanism and rotates in the first direction.

Claims (12)

1. A gas turbine engine turbine comprising:

a high pressure turbine configured to rotate with a high pressure compressor as a high pressure spool in a first direction about a central axis;

a low pressure turbine configured to rotate in said first direction about said central axis;

a fan connected to the low pressure turbine via a gear reduction and will rotate in said first direction,

wherein the engine is configured to have a ratio of a thrust provided by said engine, to a volume of a turbine section including both said high pressure turbine and said low pressure turbine that is greater than or equal to about 1.5 and less than or equal to about 5.5 lbf/in 3 ; and

said thrust is sea level take-off, flat-rated static thrust.

2. The engine as set forth in claim 1 , wherein guide vanes are positioned upstream of a first stage in said low pressure turbine to direct gases downstream of said high pressure turbine as the gases approach said low pressure turbine.

3. The engine as set forth in claim 2 , wherein a mid-turbine frame supports said high pressure turbine.

4. The engine as set forth in claim 3 , wherein said guide vanes are positioned intermediate said mid-turbine frame and said low pressure turbine.

5. The engine as set forth in claim 1 , wherein there is an intermediate section, and the intermediate turbine section drives a compressor rotor.

6. The engine as set forth in claim 1 , wherein the gear reduction is positioned intermediate the fan and a compressor rotor driven by the low pressure turbine.

7. The gas turbine engine as set forth in claim 1 , wherein the gear reduction is positioned intermediate the low pressure turbine and a compressor rotor driven by the low pressure turbine.

Assignments (6)
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 →
CHANGE OF NAME Recorded Jul 17, 2020
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 053240/0478 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 27, 2016
From: SCHWARZ, FREDERICK M.; KUPRATIS, DANIEL BERNARD
To: UNITED TECHNOLOGIES CORPORATION
Reel/Frame 037593/0592 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 9, 2015
From: SCHWARZ, FREDERICK M.; KUPRATIS, DANIEL BERNARD
To: UNITED TECHNOLOGIES CORPORATION
Reel/Frame 034670/0267 →
Continuity (3)
Continuation In Part 13445095 · Apr 12, 2012
Provisional Application 61619133 · Apr 2, 2012
Related Publication 20150114002A1 · Apr 30, 2015