INFLUENCE: The Ka-90 is similar in design to the American V22 OspreyThe Russian-built Ka-90 will theoretically take off and land like a copter but cruise as an aeroplane.
The craft was first presented at the 2008 HeliRussia international exhibition in Moscow.
It will reportedly use a shortened helicopter rotor for take-off and landing.
CC BY-SA 4.0/VITALY V KUZMIN
It will theoretically take off like a chopper and cruise like an aeroplane“We expect that development will soon reach a more practical stage, outlining a preliminary design”
Head of the Russian Kamov Development Design Bureau, Oleg ZheltovWhen it reaches 250mph a jet engine turns on and its rotor folds on the back of the aircraft.
It is expected to reach speeds of 430-500mph in “airplane mode”.
Head of the Russian Kamov Development Design Bureau, Oleg Zheltov, told Sputnik: “This work is under way.
“We expect that development will soon reach a more practical stage, outlining a preliminary design.”
Researchers are now designing potential models and carrying out tests in wind tunnels.
The concept was originally proposed during the Cold War in 1985 but shelved after the collapse of the Soviet Union.
It is similar to the SAS’s £43 million heli-plane nicknamed the “Transformer”.
The V22 Osprey – built by the US military – is twice as fast as the unit’s current flee of transport helicopter, has a top speed of 360mph and can carry at least 24 fully-equipped personnel.
Last month, Daily Star Online revealed the Boom jet – an airliner that will take passengers from New York to London in just three hours and 15 minutes.
The company is in talks with another 20 carriers, with that number tipped to swell after it featured at the Dubai Airshow.
The Boom passenger plane will hold 55 passengers, with a mini version of the jet – called Boom XB-1 – set for its debut test flight by the end of 2018.