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首页> 美国政府科技报告 >An Investigation on the Influence of Step Height, Flow Straightening, and Flameholders on Dump Combustor Afterburner Performance
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An Investigation on the Influence of Step Height, Flow Straightening, and Flameholders on Dump Combustor Afterburner Performance

机译：阶梯高度，流量矫直和火焰稳定器对自卸车燃烧器性能影响的研究

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An investigation was made on the performance of a small turbojet/dump combustor afterburner combination as a function of varying afterburner step height, straightening of the exhaust flow swirl from the turbine exit, and installing flameholders of varying degrees of blockage. Results indicated that a step height of 0.5 inch provided the greatest increase in performance with respect to thrust, thrust specific fuel consumption, augmentation ratio, and specific thrust. Performance was degraded in all cases when flow straighteners were used. Likewise, the addition of Y-shaped, V-gutter flameholders also degraded performance and in some cases made lighting the afterburner impossible. This result confirmed and expanded the data in reference 1. Comparing efficiencies tended to show decreasing efficiency with increasing step height. (Author)

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