From this page you can download the latest trial versions of the Gyles AeroDesign ToolBox programs.  You can also buy the full versions of the programs online using your credit card.

Download the freeware Lift Coefficient Calculator. (File size =119K)

Download the freeware Propeller Selector. (File size =277K)

Download the freeware Electric Motor Performance Calculator. (File size =221K)

Download the freeware Turn Radius Calculator. (File size =137K)

Buy the Pitch Stability Estimator for $5.95 using your credit card. The full product will be sent to you by email immediately upon approval of your purchase.

Download the trial version of the Pitch Stability Estimator. The trial version will allow you to try the program 10 times. (File size =1.6M)

Buy the Drag Estimator for $5.95 using your credit card. The full product will be sent to you by email immediately upon approval of your purchase.

Download the trial version of the Drag Estimator. The trial version will allow you to try the program 10 times. (File size =1.4M)

Note: HTML Help requires that Internet Explorer 3.02 or later be installed on your system. If you receive an error message when you try to open the HTML Help files, you may need to download and run the HTML Help setup file. (File size =466K)

Last modified March 21, 2002
©1999-2001  Brian R. Gyles