【摘要】 本文对1+1/2对转涡轮应用的关键技术问题进行了探讨。分析表明,出功比SWR是衡量1+1/2对转涡轮技术 难度的特征参数。增加高压转叶出口气流角和马赫数是降低出功比的两条现实途径。关于高压转叶与低压转叶非定常作用 的分析和理解将是1+1/2对转涡轮成功的关键。更多还原

【Abstract】 Explorations about the key techniques in utilizing vaneless counter-rotating turbine are presented. Analysis shows that Specific Work Ratio is the characteristic parameter, which indicates the technical difficulty involved in designing vaneless counter-rotating turbine. Increasing exit flow angle and Mach number are two ways to reduce SWR. At the same time, more deep understandings about unsteady interaction between HP and LP rotors would be the key factor to success.更多还原