Gas turbine engine with modulated flow turbine nozzle

(19)

(11)

EP 1 621 734 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	05.07.2006 Bulletin 2006/27

(43)	Date of publication:
	01.02.2006 Bulletin 2006/05

(21)	Application number: 05254173.7

(22)	Date of filing: 04.07.2005

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International Patent Classification (IPC):

F01D 9/06^(2006.01)

F02C 6/08^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

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Priority:

06.07.2004 US 885147

(71)	Applicant: GENERAL ELECTRIC COMPANY
	Schenectady, NY 12345 (US)

(72)	Inventors:
	Orlando, Robert Joseph West Chester, Ohio 45069 (US) Brauer, John Christopher Lawrenceburg, Indiana 47025 (US) Krammer, Erich Alois West Chester, Ohio 45069 (US) Frederick, Robert Alan West Chester, Ohio 45069 (US) Moniz, Thomas Ory Loveland, Ohio 45140 (US) Prentice, Ian Francis Cincinnati, Ohio 45220 (US) Dolan, James Patrick Cincinnati, Ohio 45209 (US)

(74)	Representative: Pedder, James Cuthbert et al
	London Patent Operation, General Electric International, Inc., 15 John Adam Street London WC2N 6LU London WC2N 6LU (GB)

(54)	Gas turbine engine with modulated flow turbine nozzle

(57) A gas turbine engine includes a compressor powered by a turbine (24). The turbine (24) includes a nozzle (34) having vanes (42) extending between outer and inner bands (44,46). Each vane (42) includes an internal cooling plenum (48) and a bypass tube (50) extending through the bands (44,46). First and second manifolds (52,54) surround the outer band (44) and are disposed in flow communication with the plenums (48) and bypass tubes (50), respectively. A bleed circuit (56) joins the compressor (18) to the manifolds for providing pressurized air thereto. A control valve (58) modulates airflow to the first manifold (52) and in turn through the cooling plenums (48) of the vanes.