Alternatives Aviation Fuels Experiment project scientist Bruce Anderson of NASA's Langley Research Center repairs a malfunctioning instrument shortly before an emissions test during synthetic fuels engine testing at the Dryden Aircraft Operations Facility in Palmdale, Calif.
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Alternatives Aviation Fuels Experiment project scientist Bruce Anderson of NASA’s Langley Research Center repaired a malfunctioning instrument shortly before an emissions test during synthetic fuels engine testing at the Dryden Aircraft Operations Facility in Palmdale, CA.January 27, 2009
NASA Photo / Tom Tschida