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Determine thrust and SFC of twin spool (turbofan) engine with fan driven by LPT and compressor by HPT, separate cold and hot nozzles are used given that: 1-Overall pressure ratio: 25 2- Bypass ratio 5 3- Turbine inlet temperature: 1550 K, 4-Air mass flow: 215 kg/s, 5- Fan pressure ratio: 1.65 6- The ambient pressure and temperature are 1 bar and 288 K. 7- Polytropic efficiencies are: f = nc = Nt = 0.9 %3D 8- NN = 0.95, Nm = f = 0.0221 0.99, Ap cc = 1.5 bar, Ya=1.4, Yg - 1.333, %3D

Determine thrust and SFC of twin spool (turbofan) engine with fan driven by LPT and compressor by HPT, separate cold and hot nozzles are used given that: 1-Overall pressure ratio: 25 2- Bypass ratio 5 3- Turbine inlet temperature: 1550 K, 4-Air mass flow: 215 kg/s, 5- Fan pressure ratio: 1.65 6- The ambient pressure and temperature are 1 bar and 288 K. 7- Polytropic efficiencies are: f = nc = Nt = 0.9 %3D 8- NN = 0.95, Nm = f = 0.0221 0.99, Ap cc = 1.5 bar, Ya=1.4, Yg - 1.333, %3D

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Determine thrust and SFC of twin spool (turbofan) engine with fan driven by LPT and compressor by HPT, separate cold and hot nozzles are used given that: 1-Overall pressure ratio: 25 2- Bypass ratio 5 3- Turbine inlet temperature: 1550 K, 4-Air mass flow: 215 kg/s, 5- Fan pressure ratio: 1.65 6- The ambient pressure and temperature are 1 bar and 288 K. 7- Polytropic efficiencies are: = nc = nt = 0.9 8- NN = 0.95, Nm = f = 0.0221 0.99, Apcc = 1.5 bar, ya=1.4, Yg - 1.333, (Note draw a schematic diagram to the engine and mark the stations clearly)
Transcribed Image Text:Determine thrust and SFC of twin spool (turbofan) engine with fan driven by LPT and compressor by HPT, separate cold and hot nozzles are used given that: 1-Overall pressure ratio: 25 2- Bypass ratio 5 3- Turbine inlet temperature: 1550 K, 4-Air mass flow: 215 kg/s, 5- Fan pressure ratio: 1.65 6- The ambient pressure and temperature are 1 bar and 288 K. 7- Polytropic efficiencies are: = nc = nt = 0.9 8- NN = 0.95, Nm = f = 0.0221 0.99, Apcc = 1.5 bar, ya=1.4, Yg - 1.333, (Note draw a schematic diagram to the engine and mark the stations clearly)
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