Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2007-06-05
2007-06-05
Gartenberg, Ehud (Department: 3749)
Power plants
Combustion products used as motive fluid
Process
C060S766000
Reexamination Certificate
active
11209918
ABSTRACT:
A trapped vortex cavity afterburner includes one or more trapped vortex cavity stages for injecting a fuel/air mixture into a combustion zone. The trapped vortex cavity afterburner is operable to provide all thrust augmenting fuel used for engine thrust augmentation. Each stage has at least one annular trapped vortex cavity. The trapped vortex cavity afterburner may be a multi-stage afterburner having two or more trapped vortex cavity stages ganged for simultaneous ignition or operable for sequential ignition. One embodiment of the annular trapped vortex cavity is operable to raise a temperature of an exhaust gas flow through the afterburner about 100 to 200 degrees Fahrenheit. Each of the trapped vortex cavity stages may be operable to produce a single or a different amount of temperature rise of the exhaust gas flow through the afterburner. A chevron shaped trapped vortex cavity and having zig-zag shaped leading and trailing edges may be used.
REFERENCES:
patent: 5791148 (1998-08-01), Burrus
patent: 5857339 (1999-01-01), Roquemore et al.
patent: 6286298 (2001-09-01), Burrus et al.
patent: 6481209 (2002-11-01), Johnson et al.
patent: 6735949 (2004-05-01), Haynes et al.
patent: 6983601 (2006-01-01), Koshoffer
AIAA 95-0810, “Performance of a Trapped-Vortex Combustor”, 33rd Aerospace Sciences Meeting and Exhibit, Jan. 9-12, 1995 / Reno, NV, 15 pages.
Andes William Scott
Gartenberg Ehud
Rosen Steven J.
LandOfFree
Trapped vortex cavity afterburner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trapped vortex cavity afterburner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trapped vortex cavity afterburner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3820784