CAJ | 학술논문

对比研究了某型航空发动机燃烧室点火电嘴附近的放大型喷嘴流量放大比例（δ）对燃烧性能的影响，主要包括：燃烧室出口温度分布、高空点火特性和慢车贫油熄火特性。试验结果表明：随着放大型喷嘴流量放大比例的减小，燃烧室出口温度分布的均匀性提高，出口温度分布系数（ OTDF）减小；燃烧室高空点火特性受放大型喷嘴流量放大比例的影响较小，可以忽略不计；燃烧室慢车贫油熄火油气比随放大型喷嘴流量放大比例的增大而变小，并且一组放大型喷嘴中流量放大比例最大的喷嘴对其影响最为显著。
대비연구료모형항공발동궤연소실점화전취부근적방대형분취류량방대비례（δ）대연소성능적영향，주요포괄：연소실출구온도분포、고공점화특성화만차빈유식화특성。시험결과표명：수착방대형분취류량방대비례적감소，연소실출구온도분포적균균성제고，출구온도분포계수（ OTDF）감소；연소실고공점화특성수방대형분취류량방대비례적영향교소，가이홀략불계；연소실만차빈유식화유기비수방대형분취류량방대비례적증대이변소，병차일조방대형분취중류량방대비례최대적분취대기영향최위현저。
The combustion performance includes the combustor exit temperature profile,the in-flight ignition performance and the idle blowout characteristics. This paper studied the effects of the magnified-scale flow by magnified injectors near the igniter plugs of an aero-engine combustor on combustion performance. The test results showed that the decrease of the magnified-scale flow was associated with better combustor exit temperature profile and lower OTDF,as well as almost nothing to the in-flight ignition performance. The test results also showed that the higher magnified-scale flow led to lower combustor idle blowout characteristics, and the largest magnified-scale flow of the magnified injectors had the most significant effect.