US cancels the Avrocar, a saucer-shaped test aircraft
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The Avrocar, a disc-shaped vertical-takeoff craft built by Avro Canada and taken over by the U.S. Army and Air Force in 1958, proved unstable above about three feet and topped out near 35 mph. The project was cancelled in December 1961. Its saucer shape drew comparisons with 'flying saucers'.