PERFORMANCE OF LOW-PRESSURE-RATIO FAN STAGE AT TWO OFF-DESIGN BLADE SETTING ANGLES

摘要

The overall and blade-element performance of a low pressure ratio, low tip speed fan stage at design speed is presented for two off-design rotor blade angle settings. The rotor design tip speed is 243.8 m/sec and weight flow per unit annulus area is 175. 8 kg/sec. Design weight flow and pressure ratio are 29.9 kg/sec and 1.151, respectively.