Flame holder for minimizing combustor screech

Details Flame holder for minimizing combustor screech Flame holder for minimizing combustor screech

2011-06-07

2011-06-07

Cuff, Michael (Department: 3741)

Power plants

Reaction motor

Having afterburner

C060S763000, C060S765000

Reexamination Certificate

active

07954328

ABSTRACT:
A flame holder for an augmentor includes geometry to produce large radial variations in heat release to prevent coupling with modes within the exhaust duct that produce combustor screech. A surface of the flame holder varies axially in a radial direction to produce a radial phase variation in heat released from the flame holder. The radially changing surface produces radially non-uniform and unsteady heat release that does not couple with acoustic modes within the exhaust duct.

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