The ماشین Diaries
At transonic speeds (near the velocity of sound), it helps to sweep the wing backwards or forwards to lower drag from supersonic shock waves as they start to variety. The swept wing is simply a straight wing swept backwards or forwards.ویکیپدیا® علامتی تجاری متعلق به سازمان غیرانتفاعی بنیاد ویک�