Question

For a NACA 4415 airfoil, the location of maximum camber, as a fraction of the chord length from the leading edge, is _________.

• A. 0.44
• B. 0.40
• C. 0.15
• D. 0.04

Hint:

For NACA airfoils, the first digit represents the camber as a percentage, the second digit represents the location of maximum camber as a fraction of the chord length, and the last two digits represent the maximum thickness as a percentage of the chord length.

Answer 1

The Correct Option is B

For NACA airfoils, the number 4415 represents the following components:

• The first digit (4) indicates the maximum camber as a percentage of the chord length: 4%.
• The second digit (4) indicates the location of the maximum camber from the leading edge as a fraction of the chord: 0.40 or 40%.
• The last two digits (15) indicate the maximum thickness of the airfoil as a percentage of the chord length: 15%.

Therefore, the location of the maximum camber should be 0.40 of the chord length from the leading edge.