Question:

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

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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.
Updated On: Apr 10, 2025
  • 0.44
  • 0.40
  • 0.15
  • 0.04
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The Correct Option is B

Solution and Explanation

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.

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