Power plants – Combustion products used as motive fluid – Combustion products generator
Reexamination Certificate
2006-10-03
2006-10-03
Casaregola, Louis J. (Department: 3746)
Power plants
Combustion products used as motive fluid
Combustion products generator
C137S625280
Reexamination Certificate
active
07114336
ABSTRACT:
A pulsing valve assembly pulses metered fuel flow to a turbine engine. The pulsing valve assembly comprises a valve housing having an inlet and an outlet. A divider valve divides metered fuel flow into a first flow portion and a second flow portion. A first actuator sets a magnitude of a flow divide between the first and second flow portions. The valve assembly also includes a pulsing valve for pulsing the first flow portion and a second actuator for setting a frequency of pulsing valve. The pulsed and unpulsed flow portions are then joined and delivered to the turbine engine combustion chamber.
REFERENCES:
patent: 3568716 (1971-03-01), Heitzman
patent: 2003/0056490 (2003-03-01), Anderson et al.
C.E. Johnson et al., AIAA 2000-0476 Suppression of Combustion Instabilities in a Liquid Fuel Combustor Using a Fast Adaptive Control Algorithm, 38thAerospace Scienses Meeting & Exhibit, Jan. 10-13, 2000, Reno, Nevada, 10 pages.
Y. Neumeier et al., AIAA 98-3540 Liquid Injector Actuator for Control of Combustion Processes, 34thAIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Jul. 13-15, 1998, Cleveland, Ohio, 20 pages.
Prabir Barooah et al., GT-2002-30042 Active Combustion Instability Control with Spinning Valve Actuator, Proceedings of ASME Turbo expo 2002, Jun. 3-6, 2002, Amsterdam, The Netherlands, 11 pages.
C.Hantschk et al., Active Instability Control With Direct-Drive Servo Valves in Liquid-Fueled Combustion Systems, Twenty-Sixth Symposium (International) on Combustion/The Combustion Institute, 1996, pp. 2835-2841.
Textron Motion Control, Hydraulic R-DDV™ servovalves, at http://www.textronmotioncontrol.com/Pages/motioncontrol02.html, last visited Jul. 27, 2001.
Casaregola Louis J.
Reinhart Boerner Van Deuren P.C.
Woodward Governor Company
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