| 摘要 |
A gas turbine engine augmentor includes an externally fueled annular trapped vortex cavity having a cavity opening open to an exhaust flowpath and a sole source of fuel located upstream of the trapped vortex cavity and being operable for injecting fuel into the exhaust flowpath such that at least a portion of the fuel flows into the cavity through a cavity opening. An exemplary sole source of fuel includes fuel holes in fuel tubes within spray bars operable for injecting the fuel through heat shield openings in heat shields surrounding the tubes wherein the fuel holes are located in a radially outermost portion of the exhaust flowpath. The sole source of fuel may include circumferentially spaced apart radial spray bars and/or integral spray bars integral with radial flameholders and extending radially inwardly into the exhaust flowpath wherein the radial flameholders and radial spray bars are interdigitated.
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