Title:
HIGH THRUST GEARED GAS TURBINE ENGINE
Document Type and Number:
WIPO Patent Application WO/2015/050619
Kind Code:
A3
Abstract:
A ratio of an outer diameter of a fan hub at a leading edge of the blades to an outer tip diameter of the blades at the leading edge is greater than or equal to about 0.24 and less than or equal to about 0.38. The fan tip diameter is greater than or equal to about 84 inches (213.36 centimeters) and a fan tip speed is less than or equal to about 1050 ft / second (320.04 meters / second). A bypass ratio, a gear ratio and an AN2 value are also claimed. The fan drive turbine has between three and six stages.
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Inventors:
SCHWARZ FREDERICK M (US)
HASEL KARL L (US)
MERRY BRIAN D (US)
HASEL KARL L (US)
MERRY BRIAN D (US)
Application Number:
PCT/US2014/046781
Publication Date:
June 18, 2015
Filing Date:
July 16, 2014
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP (US)
International Classes:
F02C7/00; F02C7/32
Foreign References:
| US20120291449A1 | 2012-11-22 | |||
| US20090090096A1 | 2009-04-09 | |||
| US20060053800A1 | 2006-03-16 | |||
| US20130025257A1 | 2013-01-31 | |||
| EP2610461A2 | 2013-07-03 |
Other References:
See also references of EP 3036416A4
Attorney, Agent or Firm:
OLDS, Theodore W. (Suite 350Birmingham, MI, US)
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