TABLE 5-7 NPV Analysis Results for Re-engininga

 

 

 

 

 

Fuel Savings

Re-engining Candidate (Aircraft/Engine)

Fleet Size

Annual Flight Hours

Change in Thrust (%)

Annual Fuel Used (million gal)

(%)

(million gal/yr)

C-130H/AE 2100c

272

117,776

N/A

169

28.0

47.3

C-130H/PW150c

272

117,776

N/A

169

25.0

42.3

B-1/F119/5.0

67

17,745

23

82

10.0

8.2

E-3/CFM56-2B-1

32

17,184

3

34

11.8

4.0

E-3/JT8D-219

32

17,184

0

34

6.2

2.1

E-3/CFM56-7B22

32

17,184

8

34

19.1

6.5

E-8/CFM56-2B-1d

19

8,704

E-8/JT8D-219d

19

8,704

E-8/CFM56-7B22d

19

8,704

KC-135D/E/CFM56-2B-1

115

35,190

20

45

15.8

7.1

KC-135D/E/JT8D-219

115

35,190

17

45

10.4

4.7

KC-135D/E/CFM56-7B22

115

35,190

26

45

22.7

10.2

B-52/F117-PW-100 [4]

76

24,016

19

71

24.7

17.5

B-52/CF34-10A [8]

76

24,016

9

71

15.9

11.3

B-52/CFM56-5C2 [4]

76

24,016

−9

71

26.6

18.9

C-5/CF6-80C2 (F103-GE-102)e

111

40,737

NOTE: The engine cost estimates presented are derived from correlations developed for historical military engines and may not reflect the current fair market prices of commercial engines considered in this study. Engine cost estimates vary widely, and the estimates presented may vary by as much as 100 percent from estimates developed by other independent sources such as the Avitas BlueBook of Jet Engine Values 2007 or the IBA Engine Value Book 2005.

aValues corrected after release of the January 31, 2007, prepublication version of the report.

bShading indicates a recouping of investment costs in less than 20 years and thus a positive cash flow at the 20-year point.

TABLE 5-8 NPV Analysis Results for Engine Modificationa

 

 

 

 

 

Fuel Savings

Engine Modification Candidate

Fleet Size

Annual Flight Hours

Change in Thrust (%)

Annual Fuel Used (million gal)

(%)

(million gal/yr)

KC-135 R/T/CFM56-2B-1 (Mod)

420

147,495

0

359

2.1

7.6

C-130H/T56-A427 Modc

272

132,262

N/A

189

13.0

24.6

C-130H/T56-S3.5 Modc

272

132,262

N/A

189

8.0

15.1

B-1/F101 Mod

67

23,356

0

109

10.0

10.9

KC-10/CF6-50 Mod

59

51,237

0

177

0.3

0.5

NOTE: The engine cost estimates presented are derived from correlations developed for historical military engines and may not reflect the current fair market prices of commercial engines considered in this study. Engine cost estimates vary widely, and the estimates presented may vary by as much as 100 percent from estimates developed by other independent sources such as the Avitas BlueBook of Jet Engine Values 2007 or the IBA Engine Value Book 2005.

aValues corrected after release of the January 31, 2007, prepublication version of the report.



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement