At transonic speeds (close to the speed of sound), it helps to comb the wing backwards or forwards to reduce drag from supersonic shock waves as they start to kind. The swept wing is just a straight wing swept backwards or forwards. صفحات للمحررين الذين سجَّلوا خروجهم تعلَّم المزيد مساهمات https://rowan5dk33.blogdanica.com/26956890/خانه-fundamentals-explained