502 6 Turbine-Based Engines: Turbojet, Turbofan, and Turboramjet Engines Fig. 6.55 Stations and T-s diagram of turboramjet engine (b) Compressor 2–3 T 03 ¼ T 02 1 þ 1 ¼ 606 : 65 1 þ 1 0 : 4 À 1 1 : 4 À 1 0 : 92 7 η C π C P 03 ¼ P 02 π C ¼ 1170400 Pa γ c À 1 ! γ c ! ¼ 1097 K (c) Combustion chamber 3–4 T 04 ¼ TIT ¼ 1500 K P 04 ¼ P 03 π CC ¼ 1141, 100 Pa