EP 2053203 A1 20090429 - Improvement of a ring for controlling the pitch of stator vanes of a turbomachine.
Title (en)
Improvement of a ring for controlling the pitch of stator vanes of a turbomachine.
Title (de)
Verbesserung eines Stellrings für die Anstellung von Leitradschaufeln eines Turbotriebwerks
Title (fr)
Perfectionnement à un anneau de commande de calage des aubes fixes d'une turbomachine.
Publication
Application
Priority
FR 0758244 A 20071012
Abstract (en)
The turbomachine has a compressor (11) i.e. high pressure compressor, including fixed variable orientation blades arranged circumferentially in a casing (13), where each blade has a control pivot connected to a common control ring (17) by a blade orientation control arm (27). The ring is co-axial to the casing and rotatably mounted at the exterior of the casing. The ring has two sections (30a, 30b) i.e. semi-rings, assembled by lateral connecting flanges i.e. beveled annular segments, that are fitted on both sides of the sections and fitted nearer to ends of the sections by parallel bolting.
Abstract (fr)
Turbomachine comportant un étage d'aubes fixes à calage variable. Un anneau de commande (17) coaxial au carter (13) comporte deux tronçons (30a, 30b) assemblés par des flasques de liaison latéraux (33) fixés avec encastrement de part et d'autre des tronçons au voisinage des extrémités de ceux-ci.
IPC 8 full level
F01D 17/16 (2006.01)
CPC (source: EP US)
F01D 17/162 (2013.01 - EP US); F05B 2260/301 (2013.01 - EP US); F05D 2250/411 (2013.01 - EP US); F05D 2260/50 (2013.01 - EP US); F05D 2260/79 (2013.01 - EP US)
Citation (applicant)
FR 2125012 A5 19720922 - GEN ELECTRIC
Citation (search report)
- [XY] US 3685920 A 19720822 - BURGE JOSEPH C
- [Y] EP 1496208 A1 20050112 - SNECMA MOTEURS [FR]
- [A] GB 2412946 A 20051012 - ROLLS ROYCE PLC [GB]
- [A] EP 0274931 A2 19880720 - SNECMA [FR]
- [A] FR 2599785 A1 19871211 - SNECMA [FR]
- [A] EP 1059422 A1 20001213 - SNECMA MOTEURS [FR]
Designated contracting state (EPC)
DE FR GB IT
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2053203 A1 20090429; EP 2053203 B1 20130410; CA 2641017 A1 20090412; CA 2641017 C 20150616; FR 2922257 A1 20090417; FR 2922257 B1 20140328; JP 2009097510 A 20090507; JP 5420221 B2 20140219; RU 2008140325 A 20100420; RU 2503823 C2 20140110; US 2009116954 A1 20090507; US 8226357 B2 20120724
DOCDB simple family (application)
EP 08166367 A 20081010; CA 2641017 A 20081010; FR 0758244 A 20071012; JP 2008263530 A 20081010; RU 2008140325 A 20081010; US 24934508 A 20081010