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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
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]
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).
Some radio-controlled helicopters have photo or video cameras installed and are used for aerial imaging or surveillance. Newer "3d" radio-control helicopters can fly inverted with the advent of advanced swash heads, and servo linkage that enables the pilot to immediately reverse the pitch of the blades, creating a reverse in thrust.
The MH-53's terrain-following and terrain-avoidance radar, along with GPS, enabled the helicopters to reach objectives other helicopters could not; in one case, an MH-53 used its precision navigation capability to lead a SEAL team on MH-6 Little Bird helicopters to their remote objective. 20th SOS crews flew 193 sorties during the operation ...
A fifth-generation derivative, dubbed Mi-28NM, has been in development since 2008. According to then chief executive officer at Russian Helicopters Andrey Shibitov, the criteria for the modernized helicopter include low-radar signature, extended flight range, advanced weapons control system, some capability of a fighter jet and speed up to 600 ...
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