EP 2184442 A1 20100512 - Airfoil fillet
Title (en)
Airfoil fillet
Title (de)
Übergang eines Schaufelprofils
Title (fr)
Raccord de profil d'aube
Publication
Application
Priority
EP 08168866 A 20081111
Abstract (en)
A compound fillet (10) for a turbine blade (1) that covers an airfoil to platform join (20) and is configured to comprise a first arc and a second arc. The first arc (11) having a first end tangential to the airfoil surface (5). The second arc (16) having a first end tangentially adjoining the second end of the first arc(11) and a second end adjoining the platform surface. The radius (12) of the first arc(11) is larger than the radius (17) of the second arc (16). In an aspect the compound fillet (10) comprises a first portion configured to consist of the first arc (11) and the second arc (16) wherein the second arc (16) adjoins non-tangentially the platform surface (7) at the platform edge (8). In this way the compound fillet (10) footprint on the platform surface (7) is reduced, providing the design engineer greater freedom to design and configure the platform (6).
IPC 8 full level
F01D 5/14 (2006.01)
CPC (source: EP)
F01D 5/143 (2013.01)
Citation (search report)
- [X] DE 19941134 C1 20001228 - MTU MUENCHEN GMBH [DE]
- [X] US 2002194733 A1 20021226 - SURACE RAYMOND C [US], et al
- [X] SU 556238 A1 19770430
- [Y] EP 1731712 A1 20061213 - GEN ELECTRIC [US]
- [XY] US 6942460 B2 20050913 - OSAKO KATSUYUKI [JP], et al
Designated contracting state (EPC)
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 state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 08168866 A 20081111; EP 2009064487 W 20091103