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Yak 55M Scale Aerobatic Balsa GP/EP 1520mm (ARF)


Wingspan:, Length:, Wing Area:, Flying Weight:, 4+ Channel Transmitter and Receiver,

The Yak 55 design was a entirely ground up design, radically departing in design from its predecessor, the Yak 50. It was designed to match the tight, low-speed style of Western aircraft, as seen during the 1976 World Aerobatic Championships.
The resulting design, the Yakovlev Yak-55, was a single-engined all-metal cantilever monoplane. The pilot sits in an enclosed cockpit between the aircraft's thick, fully symetrical mid-mounted wing. The powerplant is the same 360 horsepower Vedeneyev M14P engine, as used by the Yak-50. For simplicity, the Yak 55 has a fixed undercarriage with titanium sprung main gear and tailwheel.
The prototype Yak-55 first flew in May 1981 was displayed (but did not compete) at the 1982 World Aerobatic Championships. By this time, fashions in aerobatic flying had changed, with the high energy aerobatics demonstrated by the Yak-50 back in fashion, leading to the Yak-55 being rejected by the Soviet team. The Yak-55 was therefore redesigned with new shorter span, reduced area wings and a thinner but still symmetrical airfoil section, giving an increased rate of roll and speed. The Soviet aerobatic team first used the aircraft in 1984 when they won the World Aerobatic Championship.
In the late 1980s, work began on a revised version of the Yak-55, the Yak-55M, to meet demands from DOSAAF for an aircraft with further increased rates of roll, and to compete with new designs from the Sukhoi design bureau. The Yak-55M had a still smaller wing which resulted in the required improvement in roll-rate. It ...


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Found 5 years, 4 months ago at HobbyKing



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