Order your copy of
Public Domain Computer Programs for the Aeronautical Engineer.
Last updated: 23 April 2005 by
Ralph Carmichael ralph@pdas.com
Public Domain Aeronautical Software
P.O. Box 1438 Santa Cruz CA 95061 USA
Public domain program in modern Fortran is available for computing and tabulating the coordinates of NACA airfoils of the 4-digit, 4-digit modified, 5-digit, 6-series and 6A-series.
This program is a complete revision of the NASA Langley programs for computing the coordinates of NACA airfoils. The NASA 1996 program was used as a guide for the development of a program that was highly modular and contained several features that were requested by user of the older programs. The computational procedure is described in AIAA 2001-5235 (on the disc).
Parametric cubic splines are used extensively in the calculations and these procedures are collected in a module called SplineProcdures. The epsilon and psi functions used in the definition of the 6-series airfoils are defined in a module called EpsilonPsi. The remainder of the airfoil profile and mean line calculations are in a module called NacaAuxiliary. The main program in naca456.f90 is, therefore, quite compact. All of the source code is public domain and open source.
There is a page on the
History of the NACA Airfoil Project and a series of pages
with the data from Appendices I, II, III of
Abbott and von Doenhoff.
Sample cases for naca456.
Order your copy of
Public Domain Computer Programs for the Aeronautical Engineer.
Last updated: 23 April 2005 by
Ralph Carmichael ralph@pdas.com