Systems and methods involving variable vanes

(19)

(11)

EP 2 014 871 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	31.08.2011 Bulletin 2011/35

(43)	Date of publication A2:
	14.01.2009 Bulletin 2009/03

(21)	Application number: 08252364.8

(22)	Date of filing: 10.07.2008

(51)

International Patent Classification (IPC):

F01D 5/14^(2006.01)

F01D 9/04^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA MK RS

(30)

Priority:

10.07.2007 US 775523

(71)	Applicant: United Technologies Corporation
	Hartford, CT 06101 (US)

(72)	Inventor:
	McCaffrey, Michael G. Windsor, CT 06095 (US)

(74)	Representative: Tomlinson, Kerry John
	Dehns St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)

(54)	Systems and methods involving variable vanes

(57) Systems and methods involving vanes are provided. In this regard, a representative method for modifying the throat area between vanes of a gas turbine engine includes: directing a gas flow path of the gas turbine engine between a first vane (406) and a second vane (412), wherein each of the first vane and the second vane has an outer surface and an interior; and emitting pressurized air from outlet ports (410) communicating between the outer surface and the interior (404) of the first vane, wherein the emitted pressurized air from the first vane modifies a throat area (416) between the first vane (406) and the second vane (412).

Search report