Jet Engine Operation As An Integrated System INME5702 Class 9

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Jet Engine OperationAs An Integrated
SystemINME5702Class 9
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Agenda for Class 9

• Feedback on Homework 3
• Solve Homework 2 Using the Nomograph Solution
  Technique
• Next Step Parametric Study of the Single-Spool
  Turbojet

3
SINGLE-SPOOL TURBOJET MATCHING WITH NOMOGRAPHS
4. Wc2 - FP4 Continuity
2. Compressor/Turbine Energy Balance
Finish
3. Compressor Efficiency
hT Given
1. Choked FP4, FP8 Turbine Efficiency
Start
4

• Excel File

5
Parametric Study of the Single-Spool
Turbojet What are the parameters of the
Single-Spool Turbojet ? Where in the system
model do they appear ?
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Parametric Study of the Single-Spool
Turbojet What are the parameters of the
Single-Spool Turbojet ? Where in the
system model do they appear ?
1. A8 2. A4 3. FP8 4. FP4 5. hT 6. ( DP/P )
Burner 7. hC
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Which Parameters Affect Which Relationships ?
Finish
hT
hT
Start
8
Parametric Study of the Single-Spool
Turbojet What are the parameters of the
Single-Spool Turbojet ?
1. A8 2. A4 3. FP8 4. FP4 5. hT 6. ( DP/P )
Burner 7. hC
We will vary these 5 parameters
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Information Can Be Learned About the System By
Varying Its Inputs and Its Characteristics and
Monitoring the System Responses
System Model
Characteristic 1
y1
Base
Input 1
Modified
Output 1
x1
...
Input 2
Output 2
...
...
Characteristic m
ym
Input n
Output p
xm
10
Next Tuesday Bring questions prior to Thursdays
Quiz !!