IP Library › Patent Application 13346120
Patent Application
App. No. 13/346,120

GAS TURBINE ENGINE WITH GEARED ARCHITECTURE

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Quick Facts
Patent No.
US None
App. No.
13/346,120
Abstract

A geared architecture with a flex mount for a fan drive gear system.

Claims (20)

1 . A geared architecture for a gas turbine engine comprising:

a fan shaft;

a frame which supports said fan shaft;

a gear system which drives said fan shaft;

a torque frame which at least partially supports said gear system; and

an input coupling to said gear system.

2 . The geared architecture as recited in claim 1 , wherein said frame and said torque frame are mounted to a fixed structure.

3 . The geared architecture as recited in claim 1 , wherein said frame and said torque frame are mounted to a front center body of a gas turbine engine.

4 . The geared architecture as recited in claim 1 , wherein said torque frame is mounted to a planet carrier of said gear system.

5 . The geared architecture as recited in claim 4 , wherein said input coupling is mounted to a sun gear of said gear system.

6 . The geared architecture as recited in claim 5 , wherein said fan shaft is mounted to a ring gear of said gear system.

7 . The geared architecture as recited in claim 6 , wherein said gear system is a star system.

8 . The geared architecture as recited in claim 1 , wherein said torque frame is mounted to a ring gear of said gear system.

9 . The geared architecture as recited in claim 8 , wherein said input coupling is mounted to a sun gear of said gear system.

10 . The geared architecture as recited in claim 9 , wherein said fan shaft is mounted to a star carrier of said gear system.

11 . The geared architecture as recited in claim 10 , wherein said gear system is a planet system.

12 . The geared architecture as recited in claim 1 , wherein a bypass flow defines a bypass ratio greater than about ten (10).

13 . The geared architecture as recited in claim 1 , wherein said system includes a gear train that defines a gear reduction ratio of greater than or equal to about 2.3.

14 . The geared architecture as recited in claim 1 , wherein said system includes gear train that defines a gear reduction ratio of greater than or equal to about 2.5.

15 . The geared architecture as recited in claim 1 , further comprising a low pressure turbine, wherein said low pressure turbine defines a pressure ratio that is greater than about five (5).

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2012
From: MCCUNE, MICHAEL E.; PORTLOCK, LAWRENCE E.; SCHWARZ, FREDERICK M.
To: UNITED TECHNOLOGIES CORPORATION
Reel/Frame 028158/0718 →