The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2008
Filed:
Apr. 12, 2006
Bruno Schuermans, Basel, CH;
Martin Zajadatz, Kuessaberg, DE;
Christian Oliver Paschereit, Berlin, DE;
Bruno Schuermans, Basel, CH;
Martin Zajadatz, Kuessaberg, DE;
Christian Oliver Paschereit, Berlin, DE;
ALSTOM Technology Ltd., Baden, CH;
Abstract
A sensordetects the acoustic pressure at a first location in a combustion chamberof a test rigand produces an input signal which is a function of the acoustic pressure. A controllerreceives the input signal and produces an output signal which is a function of the input signal. An acoustic actuator (-) receives the output signal and introduces into the combustion chamberat a second location an acoustic pressure which is a function of the output signal. The acoustic actuator may comprise a fuel injectoror a loudspeaker. By using an appropriate control algorithm, acoustic boundary conditions corresponding to a particular gas turbine combustion chamber may be produced, at least in a certain frequency range.