Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which of the following is NOT a penalty of wing sweep?

  • A.A tendency towards tip stall
  • B.A reduction in maximum lift coefficient
  • C.Spanwise drift of the boundary layer
  • D.A large increase in skin-friction drag

Answer: D

Sweep barely changes the wetted area, so skin friction is essentially unaffected. The genuine penalties are all low-speed ones: reduced maximum lift, the spanwise drift and the tip stall it produces, and the extra high-lift machinery needed to compensate.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.