EP 1522679 A2 20050413 - Guide vanes for turbine
Title (en)
Guide vanes for turbine
Title (de)
Turbinenleitschaufeln
Title (fr)
Aubes de guidage pour turbine
Publication
Application
Priority
GB 0323909 A 20031011
Abstract (en)
In turbine blades used as nozzle guide vanes 2, 12, 22, 31 for turbine stages of an engine there is a problem with respect to high lift vanes in that there may be significant stagnation point migration about the pressure surface 13, 21, 32 of that vane. In such circumstances, appropriate positioning of coolant flow apertures 11, 24, 34 for coolant film cooling of the vane is difficult. The present invention provides on the leading edge a bulge ridge 37 which limits the range of potential movement for the stagnation point 30 whilst retaining improved lift for higher engine performance. The present invention has particular applicability with flows directed to the turbine NGV which have a significantly variable swirl angle and therefore presentation to the vane 31.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F01D 5/141 (2013.01 - EP US); F01D 5/145 (2013.01 - EP US); F01D 9/041 (2013.01 - EP US); F05D 2260/202 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL HR LT LV MK
DOCDB simple family (publication)
EP 1522679 A2 20050413; EP 1522679 A3 20120801; GB 0323909 D0 20031112; US 2005079060 A1 20050414
DOCDB simple family (application)
EP 04255388 A 20040904; GB 0323909 A 20031011; US 95939504 A 20041007