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5. (20) Problem 4.18: a turbojet engine has the following design point parameters: Mo=0, po = 100 kPa, To= 15°C πd = 0.98 πc = 25,ec = 0.90 QR = 42,800 kJ/kg, πb = 0.95, b = 0.98, T₁ = 6.0 et = 0.85, nm = 0.98 πn=0.97, p = Po Calculate (a) Fuel-to-air ratio f (b) Turbine total temperature ratio Tt For the following off-design operation: Mo 0.85, po 10 kPa, To=-15°C, Tλ = 6.5 Assume y = 1.4, cp=1004 kJ/kgK and calculate (c) Tc-off-design if Tt-design = Tt-off-design

5. (20) Problem 4.18: a turbojet engine has the following design point parameters: Mo=0, po = 100 kPa, To= 15°C πd = 0.98 πc = 25,ec = 0.90 QR = 42,800 kJ/kg, πb = 0.95, b = 0.98, T₁ = 6.0 et = 0.85, nm = 0.98 πn=0.97, p = Po Calculate (a) Fuel-to-air ratio f (b) Turbine total temperature ratio Tt For the following off-design operation: Mo 0.85, po 10 kPa, To=-15°C, Tλ = 6.5 Assume y = 1.4, cp=1004 kJ/kgK and calculate (c) Tc-off-design if Tt-design = Tt-off-design

Understanding Business
Understanding Business
12th Edition
ISBN:9781259929434
Author:William Nickels
Publisher:William Nickels
Chapter1: Taking Risks And Making Profits Within The Dynamic Business Environment
Section: Chapter Questions
Problem 1CE
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5. (20) Problem 4.18: a turbojet engine has the following design point parameters: Mo=0, po = 100 kPa, To= 15°C πd = 0.98 πc = 25,ec = 0.90 QR = 42,800 kJ/kg, πb = 0.95, b = 0.98, T₁ = 6.0 et = 0.85, nm = 0.98 πn=0.97, p = Po Calculate (a) Fuel-to-air ratio f (b) Turbine total temperature ratio Tt For the following off-design operation: Mo 0.85, po 10 kPa, To=-15°C, Tλ = 6.5 Assume y = 1.4, cp=1004 kJ/kgK and calculate (c) Tc-off-design if Tt-design = Tt-off-design
Transcribed Image Text:5. (20) Problem 4.18: a turbojet engine has the following design point parameters: Mo=0, po = 100 kPa, To= 15°C πd = 0.98 πc = 25,ec = 0.90 QR = 42,800 kJ/kg, πb = 0.95, b = 0.98, T₁ = 6.0 et = 0.85, nm = 0.98 πn=0.97, p = Po Calculate (a) Fuel-to-air ratio f (b) Turbine total temperature ratio Tt For the following off-design operation: Mo 0.85, po 10 kPa, To=-15°C, Tλ = 6.5 Assume y = 1.4, cp=1004 kJ/kgK and calculate (c) Tc-off-design if Tt-design = Tt-off-design
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