為什麼鈦用來製造飛機扇葉

鈦的強度和鋼不相伯仲,但密度是鋼
一半,換言之,比鋼輕一半.飛機重量愈輕,
以一定的能量輸入計就愈飛得快

The reason of using "Tai" is the weight as well as corrosion resistance. The air at the outlet of the engine is high (over 300 degree), Corrosion occurs if steel is being use. The resistance of stainless steel reduce graduate when temperature increase.

If the entire blade is made of composit or "Tai", the reaction between its and air reduced when compare with still.

Weight is a minor problem since not the entire airplane is made of "Tai". Work best for costomer needs and safefy is the aspect of Boeing.

Thanks