The flow separation and great range low energy flow occur at the 10% span range of second rotor blade tip near stall point firstly, which was the main reason for the compressor stall.

• 在近失速点压气机第二排转子叶片吸力面近尖部10%25叶展范围内，最先出现导致叶片失速的大范围分离和低能堵塞团；