At the end of September 2012 the U.S. National Archives has published an excerpt of the memorandum, dated June 1956, the development in the interests of the U.S. Air Force flying saucer layout. It was assumed that the device codenamed Project 1794 («1794 Project») will be able to develop a supersonic velocity and overcome almost two thousand kilometers.
Development unit U.S., surprisingly, instructed foreigners, specifically the Canadian aircraft manufacturer Avro Aircraft and its leading engineer Englishman John («Jack») Frost (John «Jack» Frost). In general, the Canadian company by the mid-1950s has proved itself by constructing a good fighter-interceptor CF-100. Frost himself, who came to Avro in 1947, previously worked for the British De Havilland, where, namely, developed Hornet fighters and Vampire, and experimental aircraft DH 108 (Swallow).
After the arrival of Jack Frost took Avro jet engine to improve and increase the efficiency of its compressor. As a result, aircraft invented the so called «blinopodobny engine» («Pancake engine»), in which the turbine via a gear set in motion the compressors and jet stream coming out around the entire circumference of the motor. Immediately to the criteria «cool war» United States (well, and several other states) interested in creating aircraft with vertical takeoff and landing, and hopefully engine Frost seemed to be the best suited for such purposes.
The first layout with a disc-shaped aircraft engine Frost became Project Y. The unit itself when all this was in the form of a bayonet spade. The project received support from the Ministry of Defence of Canada in the amount of 400 thousand Canadian dollars. By 1953, the Avro introduced tree layout of the aircraft, and the news of this spread throughout the vast mass of information. Moreover, there were rumors about plans to make Canadians frisbee. Yet funding be forthcoming Project Y is not received.
Enthusiasm to the development Frost meanwhile showed the U.S. Air Force. Aircraft showed Yankees successor «flying shovels» — Project Y-2. The machine had a disc-shaped and used for the growth of lift «Coanda effect». The basis of the machine also had a round engine rotor (for lift) and compressor (for the creation of jet propulsion). With all this created a streamlined engine jets domed body that in the future should have to give a giant plate speed and altitude.
According to open sources, the first contract for 750 thousand dollars Frost received in 1955. In 1956, Avro has invested in the development of a flying saucer 2.6 million bucks. According to declassified documents, the U.S. Air Force estimated project cost of 3.16 million dollars (now this would amount to about 26.6 million dollars). To create a successful layout Avro took a year or two. With all this the Americans had hoped that the aircraft will be able to accelerate from 3 to 4 Mach numbers (3200-4300 km per hour), to overcome above 1,800 km and climb to an altitude of about 30 km.
Avro engineers running Jack Frost developed several versions for U.S. UFO (for certain known about 2-existing layouts). Several test flights «Project 1794», also known as Avrocar and VZ-9-AV (USAF designation), even videotaped.
As you can see in the video, the unit comes off confident enough from the surface and is supported by a small adjustment, but at the stage of transition to the flight plate begins to chatter from side to side. According to test results Project 1794 has undergone several improvements, but I’m sure the Yankees continue funding Frost failed. Officially, the U.S. closed the flying saucer project in 1961.
Avro Aircraft VZ-9
The device weighs 1.36 tons and had the highest takeoff weight of 2.52 tons. Across the plate reached 5.5 meters in height — a bit more than a meter. The power plant consisted of 3 turbojet engines Continental J69-T-9. The crew of the ship was designed for 2 persons.
Estimated developers, VZ-9 could reach speeds above 480 km per hour, but in practice the unit managed to overclock to 56 miles per hour. Engineering unit range — 1600 km, actually overcame plate only 127 km. When the project ceiling in three kilometers apparatus managed to rise only 91 centimeters.
What specifically led the Yankees to abandon the development of the layout after all only a couple of years of testing, it is unclear. In fact, Frost instructed creating not just another plane, and a fundamentally new type of aircraft, and indicated in the memorandum «a year or two» — Quite mystical for such purposes as possible.
Certainly, the idea of creation of a flying saucer in the 1950s was not new. On the invention discoid aircraft engineers have worked the Third Reich. In 1939, a project of the aircraft in a saucer-shaped VTOL aircraft company patented the Focke-Wulf Heinrich Focke (Heinrich Focke). Another «flying disc», won the title of the AS-6, decided to build Arthur Zack (Arthur Sack), but the unit tests failed. In addition, the 1950 data were placed on successful developments Tipo Nazis immediately several flying saucers, including «Flying Pancake Zimmerman» and «Disk Belontse.»
Apply the same Jack Frost «Coanda effect» then has been successfully applied in the South American light multipurpose helicopter MD-520 NOTAR (no tail rotor, «no tail rotor»), also on experimental aircraft QSRA and Boeing YC-14 and the Russian military transport workers AN-72 and AN-74 with short takeoff and landing.
At the moment, «Coanda effect» intensively used in the development of unmanned aerial vehicles with vertical takeoff and landing. Their work is almost all identical to that proposed for their own flying saucers Jack Frost, except the introduction of jet engines. For example, radio-controlled UAV production company Aesir just rises to a height of several meters, and when all this is of the highest maneuverability.
The plans of the U.S. or any other country to invest in the development of modern flying saucers is not yet clear. But given the active development of unmanned systems and robotics can most likely imagine that small flying saucers lately take their place in the arsenal of the leading countries in the world.