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MAI-223
The MAI-223 Kityonok ((ロシア語:МАИ-223 «Китенок»), (英語:MAI-223 Whale Calf)) is a single-engine STOL ultralight aircraft developed by the Moscow Aviation Institute's special design bureau (OSKBEC) from 2002. The first production aircraft was delivered in 2008. A crop spraying version is under development.〔〔〔Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 68. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X〕
==Design and development==
The Kityonok is a parasol winged, conventionally laid out ultralight which seats two side-by-side. Though the prototype had a partly fabric covered fuselage, later Kityonoks have glass fibre skins everywhere except for control surfaces. The fuselage has an aluminium frame and the wings have aluminium alloy ribs. The constant chord wings are swept forward at about 4°, with 3° of dihedral. The carry electrically operated flaps. The wings are braced with a V-form pair of lift struts on each side, fixed to the lower fuselage close to the engine mounting and assisted by jury struts. The centre section loads are carried by a centre-line pair of faired cabane struts. The wings can be folded for storage. The tailplane is trapezoidal and set at the top of the fuselage; there is an electrically operated trim tab on the port elevator. The rudder has a ground adjustable tab.〔
The Kityonok is normally powered by a 73.5 kW (98.6 hp) Rotax 912 ULS flat-four engine driving a three bladed propeller, though the lower powered Rotax 503UL or 582 UL are options. Access to the cabin is via two deep, glazed doors. The Kityonok has a conventional undercarriage with main wheels on backward leaning cantilever legs mounted on torsion bars in the lower fuselage. The mainwheels have hydraulic brakes and the tailwheel castors. Alternatively it can be equipped with skis or floats.〔
Two production batches of 10 were begun in 2006, on by MAI and one by PRAD. Plans were announced that year for production of the MAI-223SKh crop sprayer version at UZGA (The Ural Works of Civil Aviation) at Ekaterinburg. 4 Kityonoks had been completed by 2009. Though it was intended to produce kits for home building as well as ready to fly aircraft, it is not known if any have been made.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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