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Fundamental Concepts Read chapter Read first chapter

2018 | OriginalPaper | Chapter

2. Flow Mechanism in High Pressure Turbines

Authors : Zhengping Zou, Songtao Wang, Huoxing Liu, Weihao Zhang

Published in: Axial Turbine Aerodynamics for Aero-engines

Publisher: Springer Singapore

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Abstract

High pressure turbine (HP turbine, HPT) technologies are developed inseparably from the development of engines. The characteristic parameter of some high pressure turbines, as shown in Table 2.1, was collected from engine manuals and other materials for reference. As can be seen from the table, with the continuous development of the engines, their thrust-to-weight ratio, turbine inlet temperature, and overall pressure ratio are reaching higher and higher levels, which means the high-pressure turbines will be operating in more severe environment and it becomes more and more challenging to study and design high-performance high-pressure turbines.
Table 2.1
Parameters of civil and military engines
Engine type
Model
Thrust to weight ratio
Fuel consumption (kg/daN h)
Turbine inlet temp. (K)
Overall pressure ratio
Pressure ratio of high pressure compressor
Number of high pressure turbine stages and expansion ratio
Manufacturer
Civil engines
CF6-50A
6.18
0.6505
1583
32.5
13
2/4.4236
GE
CF6-80C2
6.8
0.61
1588
30.4–32.7
13
2/
GE
GE90
6.3
0.56
1703
39.3
23
2/
GE
JT9D
5.63
0.6903
1585
24.21
10.3
2/3.6225
PW
PW2000
5.24
0.574
1698
27.6
 
2
PW
PW4084
6.0
0.566
1777
34.2
 
2
PW
V2500-A5
5.84
0.585
1700
31.4
 
2
IAE
CFM56-5C2
5.5
0.577
1635
37.4
11.2
1/3.78
CFM
Trent884
5.3
0.567
1686
39.88
 
1 (three-axis)
RR
Military engines
F404-402
7.83
0.76
1686
26
 
1
GE
F110-129
9.5
0.7
1728
32
 
1
GE
F100-229
7.9
0.66
1672
32
 
1
PW
F119
11.6
0.62
1950
35
 
1
PW
M88-2
8.8
0.89
1850
25
 
1
SNECMA
AL-31F
7.14
0.795
1665
23.8
 
1
NPO

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Metadata
Title
Flow Mechanism in High Pressure Turbines
Authors
Zhengping Zou
Songtao Wang
Huoxing Liu
Weihao Zhang
Copyright Year
2018
Publisher
Springer Singapore
Book
Axial Turbine Aerodynamics for Aero-engines

Print ISBN: 978-981-10-5749-6

Electronic ISBN: 978-981-10-5750-2

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-981-10-5750-2_2

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