…A paddle wheel has a structure similar to a water wheel, and is turned by the rotary motion of an onboard steam engine, which paddles the water and propels the ship forward. The first paddle boat to use a steam engine is said to be the Charlotte Dundas, a stern paddle wheel built by W. Symington of Scotland in 1802. Early paddle wheels had fixed paddles like water wheels, but because this was inefficient as the paddles scratched the water surface as they turned, in the 1950s they were improved so that they always entered and exited the water at an angle close to a right angle. … *Some of the terminology that mentions "Charlotte Dundas" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…外車は水車に似た構造をしており,船内の蒸気機関の回転運動によって回し,これで水をかきながら船を前進させる。蒸気機関を用いた最初の外車船は,1802年スコットランドのW.サイミントンが造った船尾外車式のシャロッテ・ダンダス号Charlotte Dundasといわれている。初期の外車は水かき板が水車のように固定式であったが,これでは回転につれて水かき板が水面をひっかいて効率がよくないので,50年代に入ってつねに水面に直角に近い角度で出入りするように改良された。… ※「Charlotte Dundas」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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