The Avro Canada VZ-9V Avrocar was a flying saucer in the true sense of the word. It used three turbojets to turn a central impeller which kept it airborne by providing downward thrust, it used a vane and shutter system to manouver the aircraft by venting thrust in any direction desired.
It was capable of carrying two crew seated in separate cockpits on either side, facing forward. Total diameter of the Avrocar was 18 feet. The Avrocar was first proposed in the early 1950′s by the Avro company to the Canadian government. Later the United States government showed a great deal of interest and ploughed alot of money into the project. But it proved to be unstable at heights over about 8 feet and although it appeared in a few different forms the plug was finally pulled in 1961.