EP 2841718 A2 20150304 - GAS TURBINE ENGINE WITH HIGH SPEED LOW PRESSURE TURBINE SECTION AND BEARING SUPPORT FEATURES
Title (en)
GAS TURBINE ENGINE WITH HIGH SPEED LOW PRESSURE TURBINE SECTION AND BEARING SUPPORT FEATURES
Title (de)
GASTURBINENMOTOR MIT SCHNELLEM NIEDERDRUCKTURBINENABSCHNITT UND LAGERTRÄGERFUNKTIONEN
Title (fr)
MOTEUR À TURBINE À GAZ PRÉSENTANT UNE SECTION DE TURBINE BASSE PRESSION À GRANDE VITESSE ET ÉLÉMENTS DE SUPPORT DE PALIER
Publication
Application
Priority
- US 201213455235 A 20120425
- US 201213558605 A 20120726
- US 2013037675 W 20130423
Abstract (en)
[origin: WO2014018142A2] A gas turbine engine includes a very high speed low pressure turbine such that a quantity defined by the exit area of the low pressure turbine multiplied by the square of the low pressure turbine rotational speed compared to the same parameters for the high pressure turbine is at a ratio between about 0.5 and about 1.5. The high pressure turbine is supported by a bearing positioned at a point where the first shaft connects to a hub carrying turbine rotors associated with the second turbine section.
IPC 8 full level
F01D 25/16 (2006.01); F02C 7/06 (2006.01)
CPC (source: EP)
F01D 25/162 (2013.01); F02C 3/107 (2013.01); F02C 7/06 (2013.01); F02K 3/06 (2013.01)
Citation (third parties)
Third party : Mike Burke
- D.E.GRAY ET AL.: "NASA", UNITED TECHNOLOGIES CORPORATION, article "Energy Efficient Engine Preliminary Design and Integration Studies"
- D. E. GRAY; W. B. GARDNER: "NASA", vol. II, October 1983, UNITED TECHNOLOGIES CORPORATION, article "Energy Efficient Engine Program - Technology Benefit/Cost Study"
Third party : Rolls-Royce plc /Mike Burke/
- GRAY D E: "Energy Efficient Engine Preliminary Design and Integration Studies", NASA CR-135396,, 1 December 1977 (1977-12-01), pages 1 - 366, XP055280688
- REYNOLDS C N: "Advanced prop-fan engine technology (APET) single- and counter-rotation gearbox/pitch change mechanism", NASA CONTRACTOR REPORT 168114,, vol. 1, 1 July 1987 (1987-07-01), XP055478590
- MARK DALY, BILL GUNSTON: "Jane's aero-engines", 1 March 2008, JANE'S INFORMATION GROUP, article "Pratt & Whitney", pages: 709 - 712, XP055506386
- JACK D MATTINGLY; WILLIAM H HEISER; DAVID T PRATT: "Aircraft Engine Design", 2002, AMERICAN INSTITUTE OF AERONAUTICS AND ASTRONAUTICS, INC.,, ISBN: 1-56347-538-3, article JOHN S. PRZEMIENIECKI ET AL.,: "Design: Rotating Turbomachinery", pages: 292-293, 310-311, 320 - 321, XP055514144
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2014018142 A2 20140130; WO 2014018142 A3 20140501; EP 2841718 A2 20150304; EP 2841718 A4 20160302; EP 3708792 A1 20200916
DOCDB simple family (application)
US 2013037675 W 20130423; EP 13822569 A 20130423; EP 20162850 A 20130423