Mon, Apr 23, 2012
Reduced Cruising Speeds Part Of Overall Plan To Reduce Fuel Consumption
The USAF is exploring options in its effort to reduce the amount of fuel used across its 4,693 aircraft fleet. With the recent price increase in oil, the Air Force is seeing a $1 billion increase in fuel cost for 2012. The Air Force is the largest energy user in the federal government, making 900 air mobility flights globally daily, including combat sorties.
One of the methods being used is repowering aircraft with new engines. This has been done with the KC-135 aerial refueling fleet, and is currently underway on the C-5M Super Galaxy airlifter, reducing not only fuel burn but also maintenance cost.
The changes that have taken place are already having an effect, according to a report in Stars and Stripes. The USAF hauls 27% more cargo than it did five years ago, but fuel consumption has decreased 4% since 2006. The per-mile cost to haul a ton of cargo has decreased 21% in that time. Changing aircraft routing has also had an effect on the service’s fuel bill. By optimizing flight plans through friendly countries’ air space via diplomatic methods, the Air Force saved $2.4 million in 2011.
Reducing aircraft cruise speeds has also played a part; C-17 crews slowed down 16mph to 568mph and choose routes and altitudes to maximize fuel conservation. C-130 crews are reducing engine ground run time by cutting out non-essential procedures that take up time on the runway. The use of onboard auxiliary power units to run onboard systems instead of relying on electric power supplied by engines is saving a considerable amount of fuel as well. (USAF Photo)
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