風車

Published
by
clode
on 十月 17, 2006
in 飄來的瓶中信
. 249 Comments

　　前一陣子才去看的海山漁港風車…昨日燒毀了，還記得當時站在底下時， 往上抬頭看著偌大的葉片快速旋轉著，實在是令人有點心驚，但也對現今的複合材料與大型結構的製作加工技術感到佩服。新竹的風很大，當時的風更是吹得三組葉片約略往內彎曲，如果以目測旋轉半徑 25m，0.5Hz 的週期旋轉頻率來計算的話，其葉片終端速率將高達 283 km/hr，被打到的話一定變成碎片…如今傳出燒毀的消息，損失高達一億元，也許該找個時間去參觀一下燒成怎樣了 :p…

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