10.8 An axial flow compressor with 50% degree of reaction is to have an overall com- pression ratio of seven. The inlet and exit blade angles are 50° and 15°, both mea- sured with respect to the axial...

Extracted text: 10.8 An axial flow compressor with 50% degree of reaction is to have an overall com- pression ratio of seven. The inlet and exit blade angles are 50° and 15°, both mea- sured with respect to the axial direction. The inlet static temperature is 25°C and the axial velocity can be assumed to be a constant at 160 m/s. If the isentropic efficiency of the compressor is 0.88, estimate the stagnation temperature rise and the number of stages required to achieve the desired compression ratio. Ans: Aro=34.4°; Eight stages