The joint Canada-United States project to develop a vertical takeoff and landing (VTOL) craft ends when the U.S. military withdraws funding for the Avrocar. The flying-saucer-like vehicle proved unstable in flight.
* Entry from National Museum of the Air Force: @
* Entry from "The Encyclopedia of Science": @
* "The Pentagon's Flying Saucer Problem" (Air & Space magazine, 2003): @
* Entry from Arrow Digital Archives: @
* Project Silver Bug summary: @
* Air Force technical report on Project Silver Bug (February 1955): @
* "Flaws of the Avrocar" (video from howstuffworks.com): @