風車

  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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