Which edge of the airfoil is rounded?

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Multiple Choice

Which edge of the airfoil is rounded?

Explanation:
The front edge of an airfoil is rounded to help the air flow smoothly onto the wing. A rounded leading edge reduces abrupt changes in speed and pressure as the air meets the surface, which helps keep the flow attached over more of the wing, especially at higher angles of attack. That smoother flow lowers drag and improves lift characteristics compared with a sharp corner. The trailing edge is the rear boundary and is typically kept sharp to minimize wake drag, the center line is just an imaginary reference through the chord, and back edge isn’t a standard term for an airfoil edge.

The front edge of an airfoil is rounded to help the air flow smoothly onto the wing. A rounded leading edge reduces abrupt changes in speed and pressure as the air meets the surface, which helps keep the flow attached over more of the wing, especially at higher angles of attack. That smoother flow lowers drag and improves lift characteristics compared with a sharp corner. The trailing edge is the rear boundary and is typically kept sharp to minimize wake drag, the center line is just an imaginary reference through the chord, and back edge isn’t a standard term for an airfoil edge.

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