Langley Aerodrome -  The Langley Aerodrome was a pioneering but unsuccessful manned powered flying machine designed at the close of the 19th century by Smithsonian Institution Secretary Samuel Langley. The U.S. Army paid $50000 for the project in 1898 after Langley's successful flights with small-scale unmanned models two years earlier. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
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Mean Of Transportation