Patent ID: 8011188

Claim:
A gas turbine engine augmentor comprising: an annular trapped vortex cavity pilot having a cavity forward wall, a cavity radially outer wall, and a cavity aft wall, and an annular cavity therebetween; a cavity opening extending between the cavity forward and aft walls at a radially inner end of the cavity; cavity fuel injector tubes operably disposed through the outer wall into the cavity; circumferentially spaced apart radial flameholders having integral spraybars integral with the radial flameholders and extending radially inwardly into an exhaust flowpath of the augmentor; radial spraybars extending radially inwardly into the exhaust flowpath and being circumferentially interdigitated with the radial flameholders; and the annular trapped vortex cavity pilot being located just aft and downstream of the radial spraybars and the radial flameholders at a radially outer portion of a combustion zone of the exhaust flowpath.