TABLE G-5 Sensitivity of NPV Results in Table 5-9 to Realizing 100%, 90%, and 50% of Baseline Expectations for Fuel Savings, at a Burdened Fuel Cost of $10 per Gallona,b

Candidate Aircraft/Engine Combination

Time to Recoup Investment (yr)c

Cash Flow at 20-yr Point (million $)c

100%

90%

50%

100%

90%

50%

Re-engining

 

 

 

 

 

 

C-130H/AE 2100d

7.2

7.6

10.5

5,128

4,492

1,947

C-130H/PW150d

7.7

8.2

11.3

4,435

3,867

1,594

B-1/F119/5.0

22.0

24.2

42.4

−129

−246

−771

E-3/CFM56-2B-1

10.2

10.8

15.0

421

362

127

E-3/JT8D-219

16.7

17.7

24.6

83

52

−72

E-3/CFM56-7B22

7.8

8.3

11.3

811

716

337

E-8/CFM56-2B-1e

E-8/JT8D-219e

E-8/CFM56-7B22e

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

16.6

17.8

26.2

247

146

−257

KC-135D/E: JT8D-219

25.2

27.2

41.5

−253

−320

−587

KC-135D/E: CFM56-7B22

12.9

13.8

19.7

743

598

18

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

8.4

8.9

12.6

1,902

1,652

655

B-52/CF34-10A [8]

12.8

13.6

18.9

881

720

78

B-52/CFM56-5C2 [4]

7.6

8.0

10.9

2,304

2,035

959

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

Engine modification

 

 

 

 

 

 

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

26.5

29.0

49.5

−445

−558

−1,009

C-130H: T56-A427 Modd

7.4

7.9

10.7

2,702

2,367

1,026

C-130H: T56-S3.5 Modd

9.6

10.1

14.5

1,413

1,207

381

B-1/F101 Mod

5.3

5.5

6.8

1,551

1,412

854

KC-10/CF6-50 Mod

3.3

3.3

3.6

387

379

347

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 IBA Engine Value Book 2005 as reported by Euromoney Institutional Investor, May 1, 2005.

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

bThe direct fuel cost component of $10.00 increases at 6 percent per year, and the overhead increases at 3 percent per year.

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

dThe fuel savings noted for the C-130 with new or modified engines are based on the aircraft being flown at the optimal altitude and airspeed for the selected engines and propellers. The flexibility exists in most C-130 missions for the aircraft to be operated at the best range or fuel consumption conditions. The other aircraft and engines considered in the study are operated at their prescribed mission conditions.

eE-8 re-engining already ongoing.

fC-5 re-engining already ongoing.



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