CFI Pop Quiz #221 - Symmetrical

[Chris Burgess]

When the angle of attack of a symmetrical airfoil is increased, the center of pressure will

A) remain unaffected.
B) have very little movement.
C) move aft along the airfoil surface.

[chuter]

I'll say C.

[Paul_Zurawski]

I believe it is (A)

[Caribean_gyro]

I will say "c"

[route66]

I must b stuck on B. Seems that is always my answer.

[brett s]

I'll say B - you want A but in the real world won't get it.

[Paul_Zurawski]

Page 2-1 of the Rotorcraft Flying Handbook says the COP of a symmetrical blade remains virtually unchanged as the AOA increases....I guess it depends on your version of virtually....gonna swag it to (B)

[Chris Burgess]

"B" is most correct. B) have very little movement. Paul gives the reference, and I would almost agree "depends on your version of virtually" kind of. FAA-H-8083-21 Chapter 2