Improving the Efficiency of Engines for Large Nonfighter Aircraft

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Improving the Efficiency of Engines for Large Nonfighter Aircraft (2007)
Air Force Studies Board (AFSB)

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. "5 Recurring and Nonrecurring Cost Estimations." Improving the Efficiency of Engines for Large Nonfighter Aircraft. Washington, DC: The National Academies Press, 2007.

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Improving the Efficiency of Engines for Large Nonfighter Aircraft

TABLE 5-7 NPV Analysis Results for Re-engining^a

					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 2100^c	272	117,776	N/A	169	28.0	47.3
C-130H/PW150^c	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-1^d	19	8,704	–	–	–	–
E-8/JT8D-219^d	19	8,704	–	–	–	–
E-8/CFM56-7B22^d	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 Modification^a

					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 Mod^c	272	132,262	N/A	189	13.0	24.6
C-130H/T56-S3.5 Mod^c	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.