10 weirdest aircraft in the world

Synthesis of oddly shaped planes, which have been researched and manufactured for many years, but most cannot be applied in practice such as cross-wing aircraft, pan-shaped planes .

The M2-F1 aircraft was built in 1963, with a large body that was superior to the wings.To be able to take off, M2-F1 needs a larger aircraft to pull in front.

The Avrocar-shaped aircraft is characterized by vertical take-off and landing, however, thanks to the help of the pulley system, lift it up from the top.This is a product of Canadian company Avro in 1958, for the US Air Force.The Avrocar research activity was stopped three years later because it only flew a few meters above the ground and increased heat, causing excessive noise.

Douglas X-3 Stiletto jet aircraft has a narrow body, small wings, long and pointed nose that are difficult to understand.Through tests in 1952, the X-3 flew very poorly and never reached the desired speed.However, many of the X-3's design details are used for some supersonic models today.

The vehicle moving on the moon LLRV was built in 1963. It flew and landed vertically.

NASA's large Super Guppy transport aircraft is shaped like a giant whale taking off for the first time in 1980 in California.

Russia's Mil V-12 helicopter is considered to be the largest of the same aircraft.It is 28 meters long, 4.4 meters wide.The two Mil V-12s were tested in 1967 but were stopped in 1974. They are currently only museum displays instead of being put into use.

AD-1 cross-wing aircraft was produced in 1979 in a NASA project.With the design supposed to limit aerodynamics, AD-1 can rotate the wing axis from 0-60 degrees while flying.But through many trials, AD-1 revealed instability for some swing angles and was discontinued in 1982.

The HZ1 Aerocyclehelicopter is a helicopter developed by the US military in the 1950s of the last century.The US military expects the HZ1 Aerocycle to become a standard reconnaissance device.The prototype achieved initial success but a full military assessment showed that the soldiers could not control the device if only trained through the loudspeaker.Meanwhile, the accident occurred during the test that caused the US military to stop the project.HZ1 Aerocycle has a unique model.

Helicopter hybrid Lockheed XFV "Salmon"is a flat wing aircraft capable of vertical takeoff (the same "American" V-22 Osprey).When reaching a certain height, the aircraft will rotate at a 45 degree angle to fly parallel to the ground.Finally, it was found that the aircraft was moving too slowly, so it was not qualified to serve in the US Navy.He was killed shortly afterwards.

Vought V173 isa new generation fighter in World War II.The aircraft resembles a giant two-blade propeller disk.Its design came to the US Navy in 1939. It was tested in 1940 and 1941.