涡扇发动机主燃油流量监控模型的建立及验证  

Establishment and Verification of the Main Fuel Flow Monitoring Model on a Turbofan Engine

作　　者：郝晓乐[1] 申世才[1] 齐海帆[1] 高扬[1] 

机构地区：[1]中国飞行试验研究院发动机所,陕西西安710089

出　　处：《燃气涡轮试验与研究》2014年第2期37-40,58,共5页Gas Turbine Experiment and Research

摘　　要：单发飞机装配新型发动机试飞具有较高的风险,作为发动机重要性能参数的燃油流量,可在一定程度上反映发动机的潜在故障。为确保某型涡扇发动机飞行试验安全,需对发动机主燃油流量建立监控模型。利用地面台架试验数据,结合主燃烧室喷嘴和主燃油计量装置的工作特性,建立了主燃油流量监控模型,并与装机后的地面试验数据进行对比。结果表明,该监控模型有较高的准确性和通用性,能及时发现发动机可能存在的问题和故障,确保飞行试验安全。The flight test of single-engine aircraft installed with new engine was highly risky. As one of the important engine performance parameters, the fuel flow could reflect potential faults to a certain extent. A main fuel flow monitoring model of a turbofan engine should be established for the safety in the flight test. The monitoring model was established based on the data of bench test and the characteristic of the main fu-el metering devices, and was verified through comparing with the installed engine ground test data. The re-sults indicate that the monitoring model is accurate and common, and is capable of finding the potential faults and failures to ensure the safety of flight test.

关 键 词：航空发动机 飞行试验 地面台架试验 主燃油流量 燃油总管压力 高压压气机后压力 主燃油计量开关位移 

分 类 号：V233.75[航空宇航科学与技术—航空宇航推进理论与工程]