Kettering Bug (Aerial Torpedo) Microfilm Drawings and Index

The Kettering Bug (Aerial Torpedo) was an experimental, unmanned World War I precursor to modern air-to-air and air-to-ground guided missiles. Per a request from the United States Army Aircraft Board, the Kettering Bug was designed by Charles Kettering of Dayton, Ohio, and built by the Dayton-Wright Airplane Company. Orville Wright acted as an aeronautical consultant on the project, while Elmer Ambrose Sperry designed the control and guidance system. The prototype Bug was completed and delivered to the Aviation Section of the U.S. Army Signal Corps in 1918, near the end of World War I. The Bug was capable of striking ground targets up to 75 miles (120 km) from its launch point, while traveling at speeds of 50 mph, but despite some successes during initial testing, the Bug was never deployed.