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

Discussion

Which statement about the assumptions of thin airfoil theory is FALSE?

  • A.Thin airfoil theory places the aerodynamic centre at the quarter chord
  • B.Thin airfoil theory predicts a lift curve slope of two pi per radian
  • C.Thin airfoil theory assumes the airfoil is thin and lightly loaded
  • D.Thin airfoil theory accounts for the effect of viscosity

Answer: D

The theory is entirely inviscid, which is why it gives no drag and cannot predict the stall. The other three statements describe the theory correctly, and its accuracy at low incidence is remarkable given how much it leaves out.

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

Post your comment

Please log in or register to post a comment.