In a lifting wing, how does the pressure on the lower surface compare to the upper surface?

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Study for the Principles of Flight Test. Learn with flashcards and multiple-choice questions, each question includes hints and explanations. Prepare for your exam with confidence!

Multiple Choice

In a lifting wing, how does the pressure on the lower surface compare to the upper surface?

Explanation:
Lift comes from a pressure difference between the two surfaces of a wing. As the wing moves through the air at a positive angle of attack, air speeds up over the upper surface, creating a lower static pressure there. The air beneath flows more slowly and presses more strongly against the lower surface, giving it a higher pressure than the upper surface. This greater pressure on the lower surface compared to the upper surface pushes the wing upward, producing lift. So, the pressure on the lower surface is greater than the pressure on the upper surface.

Lift comes from a pressure difference between the two surfaces of a wing. As the wing moves through the air at a positive angle of attack, air speeds up over the upper surface, creating a lower static pressure there. The air beneath flows more slowly and presses more strongly against the lower surface, giving it a higher pressure than the upper surface. This greater pressure on the lower surface compared to the upper surface pushes the wing upward, producing lift. So, the pressure on the lower surface is greater than the pressure on the upper surface.

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