旋翼/涡轴发动机动力涡轮联合变转速对性能影响研究  

Effect investigation of combined variable speed of rotor/turboshaft engine power turbine on the performance

作　　者：伊卫林[1] 崔志伟 郑霆锴 YI Weilin;CUI Zhiwei;ZHENG Tingkai(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《航空动力学报》2024年第9期124-133,共10页Journal of Aerospace Power

基　　金：国家自然科学基金(52176035)。

摘　　要：分别建立了考虑飞行工况条件的旋翼最优转速及功率需求计算模型、动力涡轮可变速的涡轴发动机性能分析模型,以此发展了旋翼/涡轴发动机转速联合优化分析方法及程序,并以UH60A直升机及T700涡轴发动机为对象进行了典型飞行包线下的性能分析。结果表明:动力涡轮转速可变后压气机、高压涡轮稳态匹配工作线变化不大,但动力涡轮自身等熵效率随转速降低有明显下降,其性能需进一步提升。与定转速运行模式相比,完成典型飞行任务后,旋翼/涡轴发动机协同变速运行可使得总耗油量明显降低约5%。The calculation model of optimal rotor speed and power demand considering flight conditions and the performance analysis model of turboshaft engine with variable speed power turbine were built respectively.Based on these models,the performance analysis method and program of rotor/turboshaft engine power turbine were developed,and the performance analysis under typical flight envelope was carried out for UH60A helicopter and T700 turboshaft engine.The results showed that when the speed of power turbine becames variable,the steady-state matching working line of compressor and high-pressure turbine changed slightly.However,the isentropic efficiency of the power turbine decreased significantly as the speed decreased,indicating that further improvements in its performance were necessary.Compared with the constant speed operation mode,after a completion of a typical flight mission,the coordinated variable speed operation of rotor/turboshaft engine could reduce fuel consumption by nearly 5%.

关 键 词：旋翼 动力涡轮 涡轴发动机 变转速 耗油量 

分 类 号：V212.5[航空宇航科学与技术—航空宇航推进理论与工程]