Unmanned Aircraft FAA Exam: At what angle of attack (for most airfoils) will the turbulence over the upper wing surface decrease lift so drastically that flight cannot be sustained and the airfoil stalls?

Question

At what angle of attack (for most airfoils) will the turbulence over the upper wing surface decrease lift so drastically that flight cannot be sustained and the airfoil stalls?

Mitchell Behnke · Accepted Answer

18 degrees to 20 degrees (upward)

Note: This would be the critical angle of attack

Unmanned Aircraft FAA Exam

At what angle of attack (for most airfoils) will the turbulence over the upper wing surface decrease lift so drastically that flight cannot be sustained and the airfoil stalls?

18 degrees to 20 degrees (upward) Note: This would be the critical angle of attack

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