配装变循环/常规发动机的飞机航程比较研究  

Comparison of Range of Aircraft Equipped with Variable Cycle Engine versus Turbofan Engine

作　　者：吴涛[1] 骆广琦[1] 胡砷纛 曾剑臣 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《计算机仿真》2015年第10期89-93,共5页Computer Simulation

摘　　要：变循环发动机相对于常规发动机在亚音速巡航时有较大的优势。为了分析变循环发动机的性能优势,提出了通过比较装机后飞机的航程来评估变循环发动机相对于常规发动机性能优势的方法。飞机航程的计算对安装性能计算的精度提出了很高的要求,利用进气道、尾喷管的特性可以准确计算安装性能,在此基础上建立的一体化性能计算程序,计算分析了在节流过程中变循环发动机和常规发动机安装性能的变化,并计算了飞机配装变循环发动机和配装常规发动机的巡航航程。结果表明:在飞机起飞重量不变的情况下,与常规发动机相比,配装变循环发动机的飞机载油量越多,巡航航程增加的幅度越大,变循环发动机的性能优势越明显。配装变循环发动机的飞机相对于配装常规涡扇发动机的飞机具有更大的航程。Variable cycle engine has great advantage over the conventional engine during subsonic cruise. The method of comparing the ranges of the aircraft to evaluate the advantage of performance of variable cycle engine rela- tive to conventional turbofan engine was put forward. Exacting installed engine performance is needed for calculating the range of the aircraft. Accurate installed engine performance was gained by taking advantage of inlet and nozzle characteristics. On this basis, an integrated performance computing model and method of aircraft/engine were estab- lished. Variation of installed performance of variable cycle engine and conventional turbofan engine was analysed dur- ing the throttle, then we calculated the subsonic cruise range of the variable cycle engine and conventional turbofan engine . The result showed that： the larger the fuel loaded by the aircraft, the larger the increment of subsonic cruise range and the more obvious the advantage of the aircraft equipped with the variable cycle engine by comparison the conventional turbofan engine under the unchanged takeoff total weight. The aircraft equipped with variable cycle engine has larger range.

关 键 词：变循环发动机 安装性能 一体化 巡航航程 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计]