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 $50 000 for the project in 1898 after Langley's successful flights with small-scale unmanned models two years earlier. File:Langley Aerodrome 01. JPG―File:Langley Aerodrome 02. JPGLangley Aerodrome No. 6 at Wesley W. Posvar Hall University of Pittsburgh