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2. Radio-controlled helicopter - Wikipedia

   en.wikipedia.org/wiki/Radio-controlled_helicopter

   A radio-controlled helicopter (also RC helicopter) is model aircraft which is distinct from a RC airplane because of the differences in construction, aerodynamics, and flight training. Several basic designs of RC helicopters exist, of which some (such as those with collective pitch control) are more maneuverable than others.

3. Mil V-12 - Wikipedia

   en.wikipedia.org/wiki/Mil_V-12

   Mil V-12 at the Central Air Force Museum. Design studies for a giant helicopter were started at the Mil OKB in 1959, receiving official sanction in 1961 by the GKAT (Gosudarstvenny Komitet po Aviatsionnoy Tekhnike - State Committee on Aircraft Technology) instructing Mil to develop a helicopter capable of lifting 20 to 25 tonnes (22 to 28 short tons).

4. Sikorsky CH-53E Super Stallion - Wikipedia

   en.wikipedia.org/wiki/Sikorsky_CH-53E_Super_Stallion

   The Sikorsky CH-53E Super Stallion is a heavy lift helicopter operated by the United States military.As the Sikorsky S-80, it was developed from the CH-53 Sea Stallion, mainly by adding a third engine, adding a seventh blade to the main rotor, and canting the tail rotor 20°.

5. Mil Mi-26 - Wikipedia

   en.wikipedia.org/wiki/Mil_Mi-26

   The upgraded aircraft is comparable to a new variant, the Mi-26T. Contract completion was planned for 2015. The contract also covered the production of 22 new Mi-26T helicopters. Eight new-built helicopters were delivered to operational units by January 2012. [11] Under the 2010 contract, 17 new-production helicopters were delivered by 2014. [12]

6. Radio-controlled aircraft - Wikipedia

   en.wikipedia.org/wiki/Radio-controlled_aircraft

   RC helicopter. Radio-controlled helicopters, although often grouped with RC aircraft, are in a class of their own due to the vast differences in construction, aerodynamics and flight training. Hobbyists will often venture from planes, to jets and to helicopters as they enjoy the challenges, excitement and satisfaction of flying different types ...

7. List of large aircraft - Wikipedia

   en.wikipedia.org/wiki/List_of_large_aircraft

   This is a list of large aircraft, including three types: ... Boeing RC-1: 1970s: 1584.57 tons ... Prototype heavy-lift helicopter, largest rotor at 39.6 m Mil Mi-6: 5 ...