涡扇发动机整机试验高压压气机流量计算方法研究  

Approachfor Computing Mass Flow Rate of High Pressure Compressor in Turbofan Engine Test

作　　者：姜逸轩 曹传军 JIANG Yi-xuan;CAO Chuan-jun(AECC Commercial Aircraft Engine Co.,Ltd.,Shanghai 200241,China)

机构地区：[1]中国航发商用航空发动机有限责任公司,上海200241

出　　处：《推进技术》2023年第10期195-204,共10页Journal of Propulsion Technology

摘　　要：发展了一种涡扇发动机整机状态下高压压气机进口流量的计算方法。通过部件试验获得转速、压比、可调静叶(VSV)角度和级间引气对高压压气机进口换算流量的影响规律,基于此规律将核心机试验结果修正到设计要求状态,获得对应于设计要求工况的压气机“转速-流量基准数据”。基于该“转速-流量基准数据”和整机试验工况相对于设计要求状态的偏差,根据部件试验获得的各因素影响规律,修正得到整机试验实际工况下的高压压气机的进口流量。本方法经某大涵道比涡扇发动机部件试验和多台份核心机试验验证,方法可靠,流量计算偏差小于0.5%,应用于整机试验能够有效支撑试验的开展和整机性能的评估。Proposed an approach for obtaining high pressure compressor(HPC)inlet mass flow rate in a turbofan engine test.Firstly,data of HPC rig tests is accumulated to illustrate which pattern the HPC mass flow rate is influenced by rotational speed,pressure ratio,variable stator vanes(VSV)angle,and inter-stage bleeding.Secondly,based on the pattern acquired above,the HPC mass flow rate in core engine tests is modified to get the“rotational speed-mass flow rate baseline data”,which is accord with the design objective.Lastly,the HPC massflow rate under actual working condition of a whole engine test is calculated by modifying the“rotational speed-mass flow rate baseline data”,based on the deviation from design objective of the influence factors.This approach has been verified by HPC rig tests and core engine tests of a certain high bypass ratio turbofan engine.The deviation of calculated mass flow rate is less than 0.5%.It can effectively support whole engine tests and the evaluation of engine performance.

关 键 词：涡扇发动机 整机试验 高压压气机 进口流量 计算 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]