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Braunschweig LF-1 Zaunkönig
The Braunschweig LF-1 Zaunkönig, (LF – ''Langsames Flugzeug'' – literally, slow aircraft), is a STOL single-seat light aircraft designed in 1939 by Prof. Ing. Hermann Winter as a fool-proof trainer for novice student pilots to experience solo flight.
==Design and development==
The LF-1 was designed by Prof. Dr.-Ing. Hermann Winter and some of his students from the Technische Universität Braunschweig (English:Technical University of Brunswick), Lower Saxony, Germany. Winter was a former chief engineer at the Bulgarian company, DAR (''Drzhavnata Aeroplanna Rabotilnitsa'' in cyrillic ''ДАР – Държавната аеропланна работилница''), where he created a line of aircraft; DAR-1, DAR-1A, DAR-2, DAR-3 Garvan, tri motor DAR-4, DAR 5 Brambar, DAR-6 and DAR-7 as well as the DAR Zdravka Vekilski and DAR Zdravka Toprakchiev gliders for the Bulgarian Army.
The LF-1 is a parasol wing monoplane with a high-set tailplane, powered by a Zündapp Z 9-092 engine delivering , able to operate from a airstrip. The two-piece wings are set at 16° dihedral and are supported by a pair of v cabane struts and v-struts either side from approx half-span to the lower centre fuselage. Full span leading edge slats extend automatically and full span trailing edge flaps / drooping ailerons can be extended manually by the pilot. The fixed tailwheel undercarriage attaches to the fuselage with long struts and oleo pneumatic shock absorbers.
It was a proof-of-concept design for a 'fool-proof' trainer intended for novice pilots with only one hour of ground instruction, the hour being reduced to five-minutes for those who had already flown gliders, and was intended to be impossible to either stall or spin.〔Brown, Eric RN ''Wings on My Sleeve'' Orion books, 2006 ISBN 978-0-297-84565-2 p.157-158〕
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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