A 50% reaction multistage axial-flow gas turbine has a stagnation enthalpy drop of 288 kJ/kg. Assume repeating stages with the identical temperature drop. The nozzle exit angle is 70°. The inlet angle to the rotating blade row is inclined at 20° with the axial direction. The axial velocity is constant through the stage. Take Cp = 1.147 kJ/kg °C and ɣ = 1.33 for the gas. List important assumptions. Calculate the stagnation temperature drop per row of moving blades and the number of stages required when meaning blade speed is 310 m/s.