Datcom by Holy Cows, Inc.


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Why do I have to pay for this?I thought it was free.

You don't have to pay to use the Digital Datcom program. It's available as a free version. However, the Datcom+ Pro version has been built to make the process of building, debugging, and using an aircraft model much more efficient. Spend your time working on your model instead of trying to figure out why things aren't working. Use the tools that come with Datcom+ Pro to plot the coefficient data and pull those plots into your report quickly and efficiently, rather than struggling with selecting tools and figuring out how to configure them for what you need. Use the built-in baselining tools to play "What If?" with your design, and very quickly see the results of modifications, to both the coefficients and the flying qualities.

Still, why do you charge for it?

The Digital Datcom consists of over 62,000 lines of Fortran IV code. Throw in 3,000 more lines of C and C++ code for the supporting programs, and a few hundred lines of Makefiles to build everything, and a couple off-the-shelf packages. These packages are all configured to work in harmony, to allow you to be productive immediately, instead of spending dozens of hours trying to figure out how to get these packages compiled and working in harmony. Add in over 90 pages of documentation, a dozen examples of different types of aircraft, and you can see where this package will save you a LOT of time. Isn't your time worth the price of the package?

How do I get support for either the program or my model?

Send an email to datcom@holycows.net. If you are having problems with your model, send it as an attachment, and describe what you are trying to do or the problem that you are having. If your aircraft is not something that can be found on the internet, including a picture of what it's supposed to look like would be helpful as well.

What if I donít like it? Can I return it for a refund?

No. Absolutely no refunds will be issued. Download the free version, and watch the demonstration videos to see how much better the Datcom+ Pro version is before you buy. ALL SALES ARE FINAL!

Can I share this program with my friends?

Absolutely NOT! This program is licensed to your computer, and your computer only. You will not be able to buy one copy and share it among many computers. Doing so is against the licensing agreement, and any damage to a computer running an illegal version of Datcom+ Pro is completely out of our hands. Holy Cows, Inc. will not be responsible for any side effects from attempting to run an unlicensed program on your computer, including but not limited to partial or complete erasure of your hard drive. YOU HAVE BEEN WARNED!

Licensing agreement

††††† Datcom+ Pro


End User License Agreement (EULA)


This license agreement ("EULA") is a legal agreement between you, either an individual or a single entity, and Holy Cows, Inc. (concerning the software identified above, which includes executable files and accompanying printed, on-line or other electronic documentation ("Software"). The Software also includes any updates and supplements to the original Software provided to you.




This software belongs to Holy Cows, Inc., and is copyright by Holy Cows, Inc., 2011. All copyrights to the Software are exclusively owned by Author. All rights not expressly granted here are reserved by Author. This Software is protected by

copyright laws and international copyright treaties, as well as other intellectual property laws and treaties. The Software is licensed, not sold.


Grant of License


The use of this software is licensed to you on only one computer. By installing, copying, running, or otherwise using the Software, you agree to be bound by the terms of this license. If you do not agree to the terms of this license, you must remove the Software from your computer.


License Transfer


You may not rent, lease, sell, or transfer your license to another person or company without written permission from the copyright holder. You may not share your activation code with another person or company. If you attempt to do this, Holy Cows, Inc. will not be held responsible for any damage or any other consequences, including but not limited to partial or complete erasure of your computer hard drive. You have been warned!


Reverse Engineering


You may not use, copy, emulate, clone, modify, decompile, disassemble, otherwise reverse engineer the Software, or any of its parts, except as provided by this agreement. Any such unauthorized use will result in immediate and automatic termination of this license agreement. If you attempt to do this, Holy Cows, Inc. will not be held responsible for any damage or any other consequences, including but not limited to partial or complete erasure of your computer hard drive. You have been warned!


Support Policy


Technical support for the Software is provided via e-mail. In some cases, Author may examine your sample project. By providing Holy Cows, Inc. with your sample project, you grant them the rights to modify, analyze, or experiment with your project, and to include your project into their test base. Distribution rights to this project will remain with you unless explicitly released to Holy Cows, Inc. via an email release from you.


Return Policy


No returns of any kind will be accepted once you have received your license key for the software.




This Software is distributed "as is". No warranty of any kind is expressed or implied. You use it at your own risk. While every attempt has been made to avoid mistakes which, for the licensed user, may result in loss of data, Holy Cows, Inc. will not be liable for data loss, damages, loss of profits or any other kind of loss while using or misusing this Software.


Holy Cows, Inc. does not guarantee that Software is error free, nor guarantees that this Software meets your personal requirements. Holy Cows, Inc. does not guarantee fixing all errors or examination of all sample projects.