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__NOTOC__ The ''Harakka'' ("European magpie") was a primary glider produced for pilot training in Finland in the 1940s. Its design was typical of this class of aircraft, a "keel" with a pilot's seat suspended beneath a high, strut-braced monoplane wing, and carrying a conventional empennage at the end of an open framework.〔"Harakka I (H-12)"〕 First flown in February 1945, the type was built from plans by Finnish gliding clubs and soon replaced earlier primary gliders such as the Grunau 9,〔"Grunau 9 ja PIK-7 Harakka, kerhon 1940-50-lukujen alkeiskoulukoneet"〕 becoming a standard piece of equipment in the clubs.〔〔Hardy 1982, p.74〕 In 1946, Raimo Häkkinen and Juhani Heinonen from Polyteknikkojen Ilmailukerho redesigned the Harakka to strengthen it.〔"PIK-sarjan lentokoneet"〕 This improved version became known as the Harakka II or PIK-7.〔"PIK-sarjan lentokoneet"〕〔Taylor 1989, p.726〕〔"Harakka II (H-57)"〕 In 1948, a single example of a more radically redesigned version designated Harakka III flew.〔"Harakka III/PIK-7 (H-34)"〕 This had the framework that supported the tail replaced by a single boom.〔 Examples of the Harakka I and Harakka II are preserved at the Suomen ilmailumuseo〔"Aircraft on display" ==Variants== * Harakka I - initial version * Harakka II - strengthened version (several dozen built)〔 * Harakka III - version with redesigned tail (1 built)〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Harakka」の詳細全文を読む スポンサード リンク
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