Cruise Mach 0.7 at 35,000 ft, International Standard Atmosphere 

Fan Pressure ratio: 1.45; Isentropic efficiency 94% 

LPC Pressure ratio: 1.45; Isentropic efficiency 92%* 

HPC Pressure ratio: 27.9; Isentropic efficiency 92% 

HPT Isentropic efficiency: 92% 

LPT Isentropic efficiency: 94% 

Tail cone Fan Pressure ratio: 1.25; Isentropic efficiency 96% 

Overall electrical efficiency 90% 

T04 1540 K 

Air properties cp: 1005 J.kg-1.K-1; cp/cv = 1.4 

Combustion products cp: 1100 J.kg-1.K-1; cp/cv = 1.3 

Number of fan-generators n_FG= 2 

Overall Bypass Ratio (〖n_FG×m ̇〗_Bypass+m ̇_TCF)/(n_FG×m ̇_Core)=14.4 Fan-Gen Bypass Ratio m ̇_Bypass/m ̇_Core=6.4 

R_1 0.35 m 

R_2 1.0 m 

Pressure loss in combustor 5% of stagnation pressure 

Boundary layer thickness δ: 1.0 m 

 

Showing the working for your calculations, complete the following table for the fanGen: [11 marks] Flight velocity V_∞ =206.57m/s Fan inlet T_02=1540K P02= Fan outlet T_013= P013= LPC outlet T_023= P023= HPC outlet T_03= P03= HPT outlet T_045= P045= Bypass jet velocity V_jB=