Public Domain Aeronautical Software (PDAS)  

The entire contents of Public Domain Computer Programs for the Aeronautical Engineer are Copyright © 2021 by Ralph L. Carmichael, all rights reserved, as a collective work (compilation copyright) under the Copyright laws of the United States of America. Except as noted below, the copying, reproduction, or publication of any part is prohibited, unless expressly authorized by Public Domain Aeronautical Software.

A compilation copyright is granted when an organization lawfully collects or acquires information and organizes it in a way that adds value to the collection. A compilation copyright grants to the owner certain rights, such as the right to control further distribution of the compilation of works.

The individual programs in this collection are specifically NOT copyrighted and are public domain by virtue of

  1. being works of a government employee in the course of his official duties OR
  2. being works for public dissemination of a contractor to the U.S. government OR
  3. being contributed to the public domain by the original author

All added value to the programs contributed by Public Domain Aeronautical Software is hereby donated to the public domain. The instructions and sample cases are also declared to be in the public domain and may be reproduced for classroom use as needed.


Although many of the works contained herein were developed by national laboratories or their contractors, neither the U.S. Government nor Public Domain Aeronautical Software make any warranty as to the accuracy or appropriateness of the procedure to any particular application.

The programs and descriptions have been collected and reproduced with great care and attention to accuracy, but no guarantee or warranty is implied. All programs are offered AS IS and Public Domain Aeronautical Software gives no express or implied warranty of any kind and any implied warranties are disclaimed. Public Domain Aeronautical Software will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of any use of this software. In no case should the results of any computational scheme be used as a substitute for sound engineering practice and judgment.

Public Domain Aeronautical Software (PDAS)