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LWD Żuraw : ウィキペディア英語版
LWD Żuraw

The LWD Żuraw was a Polish utility and liaison aircraft prototype of 1951, high-wing monoplane with single engine, that did not enter production. The name means ''crane''.
==Design and development==
The aircraft was designed in 1949 n the LWD (''Lotnicze Warsztaty Doświadczalne'' - Aircraft Experimental Workshops) as a utility and liaison aircraft for the Polish Air Force. The chief designer was Tadeusz Sołtyk. It was the last LWD design. A prototype first flew on 16 May 1951 (pilot Antoni Szymański). Because of lack of more powerful engines, it was fitted with the only available license-built Soviet radial Shvetsov M-11FR (118 kW, 160 hp). In addition to increased airframe weight (it was 160 kg heavier, than expected), the engine appeared too weak.
To obtain STOL capabilities, wings had slats and flaps. The wings were thinner near canopy to obtain good view, and they were slightly swept towards forward. Despite advantages, like short takeoff and landing and low stall speed, the performance was poor and the plane was not ordered for production. It was considered to use stronger WN-3 or Ivchenko AI-14 engines, but the design was abandoned, because Poland had bought a license to produce Yakovlev Yak-12M.
Unusual feature was triple tail, with two small vertical stabilizers in addition to a main central one. It was meant to improve aircraft stability on high edges of attack.

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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