軸流圧縮機のワイドコード化による失速限界改善に関する研究

抄録

This paper shows an improved performance of a five stages axial flow compressor and a two stages fan applying a wide chord blade in some of their rotor stages. The estimation procedure of maximum loading capability on the wide chord rotor blade is also described in this paper based on the analogy between a compressor rotor blade and a diffuser passage. A procedure for estimating the maximum pressure rise potential and minimum flow rate boundary was formulated on the basis of meanline parameters, such that it can be used during the preliminary design early phase in the planning. A good agreement is demonstrated between the predicted and tested stall pressure and stall flow rate limits for the wide chord compressor and fan.