An axial compressor stage has the following inlet data: Inlet conditions Degree of reaction Mean blade diameter Rotational speed Air angles at the stator exit Blade angle at the rotor exit Axial velocity 512 B1 = 35 Va 180 m/s Mass flow rate 10 kg/s Find the power required to drive the compressor (in kW). 389 461 T1= 298 K P=1 bar 331 R = 0.4 D = 360 mm N = 18000 rpm a1 = 25