EP 3477120 A1 20190501 - GAS TURBINE ENGINE CONTROL METHOD AND SYSTEM
Title (en)
GAS TURBINE ENGINE CONTROL METHOD AND SYSTEM
Title (de)
GASTURBINENMOTORSTEUERUNGSVERFAHREN UND -SYSTEM
Title (fr)
PROCÉDÉ ET SYSTÈME DE COMMANDE DE MOTEUR À TURBINE À GAZ
Publication
Application
Priority
EP 17198621 A 20171026
Abstract (en)
A method (100) and system for controlling rotor blade resonant frequencies in a compressor (14) for a gas turbine engine (10). A flow injection (2) is introduced into an axial air flow path (56) of the compressor (14) via a flow-injection opening (4) located at a pressure side (114) of at least one guide vane (7) of a plurality of guide vanes (7) forming a guide vane stage (46) in the compressor (14). The flow injection (2) is directed towards a neighbouring guide vane (7) located adjacent the guide vane (7) having the flow-injection opening (4). The flow injection is introduced at a predetermined operating condition to thereby enhance vane flow mixing and thereby reduce flow induced vibrations of a rotor blade (200) downstream of the vanes (7).
IPC 8 full level
F04D 29/68 (2006.01); F04D 27/02 (2006.01); F04D 29/54 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP)
F04D 27/0238 (2013.01); F04D 29/542 (2013.01); F04D 29/668 (2013.01); F04D 29/684 (2013.01); F05D 2240/123 (2013.01); F05D 2270/114 (2013.01); F05D 2270/304 (2013.01)
Citation (search report)
- [XI] US 2011027065 A1 20110203 - BRYAN WILLIAM BARRY [US]
- [XI] FR 1263010 A 19610605 - M A N TURBOMOTOREN G M B H
- [E] EP 3296573 A1 20180321 - SIEMENS AG [DE]
- [I] US 6125626 A 20001003 - EL-AINI YEHIA M [US], et al
- [I] GB 671228 A 19520430 - ARMSTRONG SIDDELEY MOTORS LTD, et al
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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 17198621 A 20171026