涡扇发动机风车起动点火匹配研究  

Windmilling starting ignition match for turbofan engine

作　　者：陈立 罗载奇 CHEN Li;LUO Zai-qi(AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China)

机构地区：[1]中国航发四川燃气涡轮研究院,成都610500

出　　处：《燃气涡轮试验与研究》2017年第5期8-12,共5页Gas Turbine Experiment and Research

摘　　要：针对涡扇发动机在高空状态的风车起动点火失败情况进行了原因分析和油气匹配研究。通过分析影响风车起动点火的主要因素,找出了点火失败的原因是点火油气不匹配,偏离了燃烧室可靠点火的余气系数边界。在油气匹配研究的基础上,提出了调整点火油气比的解决措施,并在高空台进行了试验验证。验证表明:该涡扇发动机风车起动点火失败的分析评估方法和解决措施合理可行,可为同类型发动机风车起动点火匹配设计和评估提供参考。Aiming at windmilling start ignition failure cases in the state of high altitude for a certain type of turbofan engine,mechanism analysis and research of fuel and gas match for the windmilling start ignition has been completed.The main factors affecting windmilling start ignition have been analyzed.The reason for the ignition failure was that fuel and gas was not match and excess air coefficient deviated from the combustor ignition boundary.On the basis of fuel and gas match research,the measures were put forward,and verification test at high altitude test bed was completed.Test results show that the methods of analysis and measures are reasonable,which can provide reference for match design and evaluation of windmilling start ignition for the same type of engine.

关 键 词：航空发动机 风车起动 燃油雾化 点火匹配 起动控制 余气系数 

分 类 号：V233.6[航空宇航科学与技术—航空宇航推进理论与工程]