Lecture_15 - AOE/ME 4234 Lecture 15 10-03-07 AOE/ME 4234 1...

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AOE/ME 4234 1 AOE/ME 4234 Lecture 15 10-03-07
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AOE/ME 4234 2 Turbojet Performance
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AOE/ME 4234 3 Turbojet Performance
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AOE/ME 4234 4 Turbojet Performance
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AOE/ME 4234 5 TurboFan Engine Design Two-shaft engine without a mixed exhaust stream 1 2 2.5 3 4 4. 5 5 6 7 LPT HPT HP C Fan Define Thrust equation - normally 0
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AOE/ME 4234 6
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AOE/ME 4234 7
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AOE/ME 4234 8
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AOE/ME 4234 9 TurboFan Engine Design
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AOE/ME 4234 10 TurboFan Engine Design Increase CPR to increase and is larger So is larger All turbine engine performance is affected by M a , T 04 and CPR, FPR, B. These are Design Point calculations
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AOE/ME 4234 11 TurboFan Engine Design The fan temperature and pressure ratios would be same techniques
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AOE/ME 4234 12 TurboFan Engine Design Every engine, after the choice of the Design Point performance, has a set of Off-Design performance values To calculate the performance of the fan engine, use the turbine engine principles appropriately Example
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AOE/ME 4234 13 TurboFan Engine Design 1 2 2.5 6 7 3 4 4.5 5 a 5 mixer
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14 TurboFan Engine Design GE: F110-129 Fan stages: 3 Compressor Stages: 9 Low-Pressure Turbine: 2 High-Pressure Turbine Stages: 1 Max Diameter (Inches): 46.5 Length (Inches): 182.3 - 232.3 Dry Weight (Lb.): 3,920 - 4,400 Max. Power at Sea Level (Lb.) : 27,000 - 28,000 Overall Pressure ratio at Maximum Power : 29.9 - 30.4 Application Examples: F-14 ,F-16 GE: CF6-6 Fan Stages: 1 LP Compressor Stages: 1 HP Compressor Stages: 16 Low-Pressure Turbine Stages: 5 High-Pressure Turbine Stages: 2 Max Diameter (Inches): 105 Length (Inches): 188 Dry Weight (Lb.): 8,176 - 8,966 Specific Fuel Consumption at Maximum power: 0.35 Max. Power at Sea Level (Lb.): 41,500
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Lecture_15 - AOE/ME 4234 Lecture 15 10-03-07 AOE/ME 4234 1...

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