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Ludwig Kort Ludwig Kort was a German fluid dynamicist known for developing the ducted propeller, or Kort nozzle. In an attempt to reduce canal erosion, Kort discovered that directing the wake of a propeller through a short, stationary nozzle also increased thrust. He submitted a U.S. patent for this technique, which was awarded in 1936. His research showed that the performance of ducted propellers heavily depended on the cross-section and thickness of the duct. == References ==
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「Ludwig Kort」の詳細全文を読む
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