US 8,753,065 B2
Method for setting a gear ratio of a fan drive gear system of a gas turbine engine
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US 8,753,065 B2
Method for setting a gear ratio of a fan drive gear system of a gas turbine engine
Tech Center:
3700 Mechanical Engineering, Manufacturing and Medical Devices/Processes
Examiner:
Igor Kershteyn
Art Unit:
3745 Thermal and Combustion Technology, Motive and Fluid Power Systems
Agent:
Carlson, Gaskey & Olds, P.C.
Inventors:
William G. Sheridan; Karl L. Hasel
Assignee:
RTX CORPORATION
Priority:
09/27/12
Filed:
02/04/13
Granted:
06/17/14
Expiration:
09/27/32
Abstract
A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a fan section including a fan rotatable about an axis and a speed reduction device in communication with the fan. The speed reduction device includes a star drive gear system with a star gear ratio of at least 1.5. A fan blade tip speed of the fan is less than 1400 fps.
Cooperative Patent Classification (CPC)
F01F01D25/162F01DF02C7/00F02K3/06F02CF05D2260/40311F05D

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