A turboprop is flying at M = 0.5 at an altitude of 9 km. The following properties are given:
T0 = 230 K
p0 = 30.8 kPa
Cp = 1106 J kg-1 K-1
γ = 1.35
p5° = 120 kPa
T5° = 950 K
mass flow = 50 kg s-1
η_PR = 0.75
η_G = 0.95
η_PT = 0.89
η_n = 0.98
Find the best combination of propeller and jet thrust that maximizes total thrust.