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

Discussion

A negative pressure coefficient over the upper surface of an airfoil indicates

  • A.That the airfoil is producing no lift at all
  • B.Local pressure below free-stream static pressure
  • C.Local pressure above free-stream static pressure
  • D.That the flow has separated at that point

Answer: B

Negative values mean suction relative to the free stream, and it is the large suction peak near the leading edge that produces most of the lift. Separation is indicated by a flattening of the distribution rather than by the sign.

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

Post your comment

Please log in or register to post a comment.