1+1/2(无低压导叶)对转涡轮是高性能军用发动机迫切需要的关键技术之一。本文针对该类对转涡轮展开基本分析，并以某型发动机为目标进行了1+1/2对转涡轮试验件的初步设计。研究表明1+1/2对转涡轮总效率更多由第一级决定，第二级效率一般较高；高低压轴出功比和第一级涡轮的负荷水平是表征此类涡轮设计难易程度的关键参数。
Vaneless Counter-Rotating Turbine (VCRT) is one of thekey defense technologies. A primary analysis about this kind ofcounter-rotating turbine is presented, also a primary design isconducted. Results show that the total efficiency of VCRT isdetermined mainly by the high-pressure turbine stage. Generally,the second stage, namely low-pressure stage, has higherefficiency. Specific work ratio between high-pressure shaft andlow-pressure shaft and load level of high-pressure turbine represent the difficulties fronted in process of designing a VCRT.
参考文献
| [1] | W L Stewart.Analytical Investigation of MultistageTurbine Efficiency Characteristics in Terms of Work andSpeed Requirements[J].NACA RM E57k22b,1958 |
| [2] | 季路成 .关于复杂流场计算及对转涡轮设计与实验方案的初步研究[D].中国科学院工程热物理研究所,2000. |
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