Appeal No. 2004-1023 Page 3
Application No. 09/393,714
support of the rejections, and to the Brief (Paper No. 36) and Reply Brief (Paper No. 38)
for the appellants’ arguments thereagainst.
OPINION
In reaching our decision in this appeal, we have given careful consideration to
the appellants’ specification and claims, to the applied prior art references, and to the
respective positions articulated by the appellants and the examiner. As a consequence
of our review, we make the determinations which follow.
The appellants’ invention is directed to improvements in methods for minimizing
thermoacoustic vibrations in gas turbine combustion chambers. As expressed n
independent claim 18, the method comprises measuring a pressure in the combustion
system, feeding first and second quantities of fuel through first and second fuel lines in
a pulsating process based on the measured pressure in the combustion chamber where
such feedings minimize the pressure amplitude of thermoacoustic vibrations, and
completing a modulation period, the modulation period including the
feeding of the first quantity of fuel and the feeding of the second quantity
of fuel wherein a pulse of the pulsating process is limited with respect to
both time and subsequent feeding of the second quantity of fuel.
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007