3.9 For a certain stage of an axial flow turbine, the nozzle makes an angle of 28° with the wheel tangent. The axial velocity component at the inlet is 500 ft./s. (a) If the degree of reaction is 50%...

Extracted text: 3.9 For a certain stage of an axial flow turbine, the nozzle makes an angle of 28° with the wheel tangent. The axial velocity component at the inlet is 500 ft./s. (a) If the degree of reaction is 50% and the blade speed is 550 ft./s, find the blade angles. (b) If nozzle angle, blade speed, and axial velocity remain unchanged, what should the value of degree of reaction be for maximum utilization? Ans: B, = a, = 52°; ß2 =a, = 28°; R=0.145 %3D