EP 2449216 A1 20120509 - ROTOR BLADE AND METHOD FOR REDUCING TIP RUB LOADING
Title (en)
ROTOR BLADE AND METHOD FOR REDUCING TIP RUB LOADING
Title (de)
LAUFSCHAUFEL UND VERFAHREN ZUR VERMINDERUNG VON REIBERMÜDUNG
Title (fr)
AUBE DE ROTOR ET PROCÉDÉ RÉDUISANT LA CHARGE LIÉE AU FROTTEMENT
Publication
Application
Priority
- US 2010036996 W 20100602
- US 49461009 A 20090630
- US 49459509 A 20090630
Abstract (en)
[origin: WO2011002570A1] An air foil (42) for use in a rotor assembly is disclosed, the airfoil having a tip- cutter (100) located on a sidewall (44) near a tip portion (60). Wherein the tip-cutter (100) ?s capable of removing a portion of an abradable material (32) during a tip rub. In another embodiment an airfoil (42) has a tip-grinder (120) located on the tip portion (60) wherein the tip-grinder (120) capable of removing a portion of an abradable material (32) during a tip rub in another embodiment an airfoil (42) has a tip-rake (110) that facilitates reducing loading induced to said airfoil (42) during tip rubs. A method (300) for reducing tip rub loads in a rotor blade (15) is described comprising the steps of incorporating a tip-cutter (100) having a selected a cutter-profile (102) on a selected location on the blade (15) such that tip-cutter (100) is capable of removing a portion of a static structure (32) during a tip rub such that tip rub loads are facilitated to be reduced.
IPC 8 full level
F01D 5/20 (2006.01); F01D 11/12 (2006.01); F04D 29/16 (2006.01); F04D 29/38 (2006.01); F04D 29/54 (2006.01)
CPC (source: EP)
F01D 5/20 (2013.01); F01D 11/122 (2013.01); F04D 29/164 (2013.01); F04D 29/324 (2013.01); F05D 2220/36 (2013.01); Y02T 50/60 (2013.01)
Citation (search report)
See references of WO 2011002570A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2011002570 A1 20110106; CA 2766534 A1 20110106; CA 2766534 C 20171212; EP 2449216 A1 20120509; JP 2012532268 A 20121213; JP 5628307 B2 20141119
DOCDB simple family (application)
US 2010036996 W 20100602; CA 2766534 A 20100602; EP 10727571 A 20100602; JP 2012517542 A 20100602