NACA
NACA Airfoils

NACA is a Python library which can take the parameters of certain NACA airfoils and return the coordinates of a sequence of points that outline the wing shape.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

NACA is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

Related Data and Programs:

Reference:

1. Eastman Jacobs, Kenneth Ward, Robert Pinkerton,
   "The characteristics of 78 related airfoil sections from tests in the variable-density wind tunnel",
   NACA Report 460, 1933.

Source Code:

• naca4_cambered.py, given a point xc along the camber line, returns pairs (xu,yu) and (xl,yl) along the upper and lower airfoil surface of a NACA cambered 4-digit airfoil.
• naca4_cambered_test.txt, the data outlining the NACA cambered 4-digit airfoil.
• naca4_cambered_test.png, the image of a NACA cambered 4-digit airfoil.
• naca4_display_test.py, displays, one after another, 23 NACA airfoils.
• naca4_mpt.py, extracts the M, P and T parameters from a NACA 4 digit code.
• naca4_symmetric.py, given a point x, returns the value y(x) so that (x,y(x)) lies on the upper surface of a NACA symmetric 4-digit airfoil and (x,-y(x)) lies on the lower surface.
• naca4_symmetric_test.txt, the data outlining the NACA symmetric 4-digit airfoil.
• naca4_symmetric_test.png, the image of a NACA symmetric 4-digit airfoil.
• timestamp.py, prints out the current YMDHMS date as a timestamp.

Examples and Tests:

• naca_test.py, calls the tests.
• naca_test.sh, runs the tests.
• naca_test.txt, the output file.

You can go up one level to the Python source codes.