Improving the Efficiency of Engines for Large Nonfighter Aircraft (2007) / Chapter Skim
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2 Selection of Candidates
2 Selection of Candidates
Pages 18-25
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From page 18... ...
In other cases—for example, the Joint Surveillance and Target Attack Radar System (JSTARS) —the operational benefits and potential cost savings from reduced maintenance and spares might make a compelling case, even for a small number of aircraft, that quite overshadows the benefits of the fuel savings.
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From page 19... ...
Unfortumately, the length of time a particular MDS will remain in the inventory from today is not predictable with much confidence. The Air Force has a planned retirement schedule for all MDS s based on a number of important factors, only one of which is the estimated airframe life in hours.
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From page 20... ...
This means that the military must be equipped with the right Ends and numbers of equipment to prevail in wartime, yet good stewardship demands that in peacetime, the equipment be used just enough to maintain an adequate level of training for personnel. This 5- to 10-fold difference between military and commercial practice explains why, absent considerations of force structure and alternative innovative approaches to financing, it is so much more difficult to make a good business case for large, expensive modifications of Air Force aircraft.
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From page 21... ...
Figure 2-1 breaks down the Air Force's total aircraft O&S costs first into total engine O&S costs and then by the cost elements described above. As can be seen, the cost of engine O&S in FY05 was about 20 percent of total aircraft O&S costs.
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From page 22... ...
The cost to re-engine an aircraft can vary significantly. If there is a commercial engine that can fit within the housing of the existing engine with only minor modifications, the per-engine cost will be close to that of the engine itself.
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From page 23... ...
The introduction of new engines to am existing airframe cam result in improved operation capabilities that are just as valuable to the Air Force. For example, in a press release dated July 7, 2006, regarding the re-engining program for the C-5 (GE Aviation, 2006)
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From page 24... ...
As a first cut, a plot was constructed that mapped potential fuel savings (based on 2005 fuel consumphon as reported in AFTOC, 2006) for each group of aircraft against the remaining life, as provided by the Air Force.
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From page 25... ...
Air Force Total Ownership Cost Database.
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