Free spreadsheets!

I’m pleased to announce that my rotorcraft spreadsheets are now available under a Creative Commons Attribution ShareAlike 4.0 International License. These include:

All files and tools on this page are provided “as is” with no express or implied warranty for accuracy or accessibility. Use at your own risk. All calculations should be checked before being relied upon for flight planning purposes.

License Terms

The CC-BY-SA-4.0 license means you are free to copy and redistribute the material in any medium or format, remix, transform, and build upon the material for any purpose, even commercially.

You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original. You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.

No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.