Soon the Natural-Gas BUFF: The venerable B-52 bomber will serve as the alternative fuel guinea pig of the Air Force Research Lab’s propulsion directorate in September when a bomber flies with two of its eight engines running on a specially blended fuel derived from natural gas. This project is another by-product of the rising cost of fuel. Once considered too costly to pursue, the Fischer-Tropsch fuel production process has probably reached the break-even point, says Maj. Timothy Schulteis, Air Force propulsion program element monitor. AFRL researchers also are considering using coal. According to USAF, the service went in the hole by some $800 million last year alone because of rising fuel costs.
As Air Force leaders consider concepts of operations for Collaborative Combat Aircraft, sustainment in the field—and easing that support by using standard parts and limiting variants—should be a key consideration, according to a new study from AFA's Mitchell Institute of Aerospace Studies.