USA UFO – Avrocar 1950
The Avro Canada VZ-9 Avrocar was the vertical take-off and landing vehicle name under which a the USA and Canada developed one of their first experimental flying vehicles with the capacity to fly at any angle, to soar stop in the air or to land on very small patches of land, without the need of a landing track.
The vehicle was designed to experiment the Coandă effect, which meant that it used a single or multiple turbines, exhaust which was further burned to provide unprecedented speed and accuracy in control.
But, outside of the propulsion solution, the vehicle resembled closely what was reported to be UFOs at the time. Therefore, it has been invariably linked to to various UFO sightings and many believed to have found the actual truth behind the many sightings, thus and once and for all putting a stop to speculations.
What is however a fact is that none of the prototypes that were designed were ever capable of sustaining a flight or of being manned or controlled from the surface and thus, the experiments were much of the time grounded, therefore, none of these vehicles could have actually been seen. It is thus suspected that the design and the shape of these vehicles was designed so as to verify whether or not such vehicles were already in use by other military forces, so their design would have actually been started by these sightings.
In any case, the Avrocar was discontinued under the circular, flying saucer shape, and instead more traditional, rocket like designs were further explored, in the Y-1 and Y-2 projects. The Avrocar was officially discontinued in 1961 after a very troubled period of testing and mainly failure to get it to fly. Its shape was mostly to blame, as it could only hover to a very low temperature before it began to tilt uncontrollably to a side or the other.