تیر (جنگ‌افزار)

تیر سنتی (بالا) و روگرفت قرون وسطایی (پایین).

تیر پرتابه‌ای نوک تیز است که با کمان یا جنگ‌افزارهای مشابه مانند آربالت پرتاب می‌شود. تیر از پیش از تاریخ در بیشتر فرهنگ‌ها و تمدن‌ها بکار می‌رفته‌است.

اجزای تیر در گذشته از سه بخش اصلی تشکیل می‌شد:

  • پیکان که از جنس سنگ یا فلز بود و نوک تیز تیر را تشکیل می‌داد.
  • بدنه که از قطعه‌ای چوب دراز و صاف تهیه می‌شد.
  • پر که از پر پرندگان تهیه می‌شد.

پیکان و پر را به دو انتهای بدنه می‌بستند. پیکان پس از پرتاب به هدف برخورد می‌کرد و به خاطر نوک تیز و سرعتی که داشت در آن فرومی‌رفت.

پر در حرکت مسقیم و پایدار تیر مؤثر بود.

تیرهای امروزی که در شکار و ورزش بکار می‌رود از مواد دیگری بجز چوب و پر ساخته می‌شوند.

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