Solve the below:
Q: An axial-flow fan operates in sea level air at 1200 r/min and has a blade-tip diameter of 1 m and a root diameter of 80 cm. The inlet angles are a1 = 55° and ß1 = 30°, while at the outlet ß2 = 60°. Estimate the theoretical values of the
(a) Flow rate,
(b) Horse-power, and
(c) Outlet angle a2.