EP 1564377 A3 20061108 - Rotor blade and rotor disc for a gas turbine engine with a reduced coefficient of friction at the blade and disc interface
Title (en)
Rotor blade and rotor disc for a gas turbine engine with a reduced coefficient of friction at the blade and disc interface
Title (de)
Gasturbinen-schaufel und -rotorscheibe mit einem reduzierten Reibungskoeffizient an der Schaufel- und Rotorscheibe-grenzfläche
Title (fr)
Aube et disque rotorique d'une turbine à gaz ayant un coefficient de friction réduit à l'interface entre l'aube et le disque rotorique
Publication
Application
Priority
GB 0403064 A 20040212
Abstract (en)
[origin: EP1564377A2] A rotor blade, a rotor disc (24) or load bearing assembly having at least one bearing surface (22) for contact with a corresponding bearing surface (28). At least one selected area of the bearing surface (30,32) which, in operation, is an area of alternating stress greater than about 50 MPa (peak to peak), is configured to have a co-efficient of friction lower than the remainder of the bearing surface (34). The selected area (30,32) having a co-efficient of friction lower than the remainder of the bearing surface (34) may be provided by the application of a dry film lubricant, with the remaining area(s) (34) of said bearing surfaces (22) being substantially free of the said coating.
IPC 8 full level
CPC (source: EP GB)
F01D 5/3092 (2013.01 - EP GB); F04D 29/34 (2013.01 - GB)
Citation (search report)
- [XY] US 4169694 A 19791002 - SANDAY SANTIAGO C [US]
- [Y] EP 0496503 A1 19920729 - GEN ELECTRIC [US]
- [X] US 3809495 A 19740507 - STAHL W
- [X] US 5264295 A 19931123 - YOSHIKAWA TAKAYA [JP], et al
- [A] US 5846054 A 19981208 - MANNAVA SEETHARAMAIAH [US], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR LV MK YU
DOCDB simple family (publication)
EP 1564377 A2 20050817; EP 1564377 A3 20061108; EP 1564377 B1 20100407; DE 602005020379 D1 20100520; GB 0403064 D0 20040317; GB 0501610 D0 20050302; GB 2411210 A 20050824; GB 2411210 B 20080716
DOCDB simple family (application)
EP 05250384 A 20050126; DE 602005020379 T 20050126; GB 0403064 A 20040212; GB 0501610 A 20050126