摘要
为探索适用于中国航空涡扇发动机的吞鸟适航符合性验证方法,针对吞鸟适航符合性验证需求,结合涡扇发动机研制,重点围绕中鸟附加的完整性评定要求,从试验发动机、试车台架、吞鸟试验专用设备和测试方案等方面,提出试验系统要求;从风扇叶片标识、鸟体发射系统布局、投鸟参数校准和鸟弹准备等方面,提出具体试验方法;从鸟的质量、投射位置、投射速度、试验状态和试验程序等方面,制定试验参数。依据制定的符合性验证方法,在露天试验台完成涡扇发动机整机试验验证,进行了中国涡扇发动机吞鸟适航符合性方法的探索与实践。结果表明:质量为0.71 kg的鸟弹以99 m/s的速度投向70%风扇叶高区域后,发动机推力损失2%,验证了涡扇发动机吞鸟后仍具有稳定工作的能力,为后续涡扇发动机开展吞鸟适航符合性的研究与验证奠定基础。
In order to explore the airworthiness compliance verification method applicable to China's turbofan engines,according to the airworthiness compliance verification requirements of bird ingestion,combined with the development of turbofan engines,focusing on the medium bird additional integrity assessment requirements,the test system requirements were put forward including test engine,test bed,special equipment for bird ingestion test,instrumentation scheme and so on.The specific test methods were proposed covering fan blade identification,bird launch system layout,bird projection parameter calibration,and bird(projectile)preparation,etc.The test parameters are established from the aspects of bird mass,projection position,projection speed,test conditions,and test procedure.Accord⁃ing to the established compliance verification method,the test verification of a turbofan engine was completed within an open-air test bed,and the exploration and practice of turbofan engine bird ingestion airworthiness compliance method in China was carried out.The results show that the engine thrust loss was 2%after the bird(projectile)with a mass of 0.71 kg was fired into an area at a blade span height of 70%with a speed of 99 m/s,which verifies the ability of stable operation of the turbofan engine after bird ingestion,and lays the foundation for subsequent turbofan engine bird ingestion airworthiness compliance research and verification.
作者
张清
沈锡钢
牛坤
么铸霖
ZHANG Qing;SHEN Xi-gang;NIU Kun;YAO Zhu-lin(AECC Shenyang Engine Research Institute,Shenyang 110015,China)
出处
《航空发动机》
北大核心
2024年第5期97-104,共8页
Aeroengine
基金
航空动力基础研究项目
辽宁省冲击力学实验室项目资助。
关键词
吞鸟
涡扇发动机
适航
符合性验证
bird ingestion
turbofan engine
airworthiness
compliance verification
