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Last updated: March 9, 2012

Alan Estenson, Webmaster

Contact me at:
estenson [at] mn-rocketry [dot] net


Aery - Model Glider Design

A computer program for the design and analysis of simple model gliders.  

Copyright © 1996 - 2013 by Alan S. Estenson

Also see Aery FAQ's and Aery Tips

Aery32 released!  Download this new version using the link below.


photo of actual gliders designed in Aery

Aery is an interactive program for the computer aided design and analysis of simple model gliders.  At any time, the design may be analyzed for flying ability.  Once a design is completed, plans may be printed to allow construction of the glider out of balsa wood and similar materials.  Aery was intended for use by groups or within the classroom to assist in teaching simple aerodynamics, stability, and aircraft design.  Aery uses the SI (metric) system for all numbers and measurements.  Aery runs on PC's under the Windows operating system.


Aery may be freely distributed for non-commercial use by individuals, non-profit groups, and educational institutions. Aery may not be sold or used for commercial purposes.


Aery is no longer in development!  There are no plans to modify, develop, extend or update this program in the future.

This software program (Aery and Aery32) is provided AS-IS with no expressed or implied warranty or guarantee of any kind including, but not limited to, the implied warranties of fitness for a particular purpose.  The author of Aery (Alan Estenson) shall not be liable for any losses or damages of any kind resulting from the use of this program.  By downloading and/or installing Aery, you are accepting and agreeing to these terms.


Click here to download (1,939K)  [newest version - recommended!]

Click here to download (577K)  [ancient version - don't use it - just here for archival purposes]

Requirements and Installation Instructions

Note that requirements and installation procedures differ depending upon which version of Aery you have!  Unless you’re using an incredibly old computer, Aery32 is the recommended version.

Aery32 (32-bit program, updated in Visual Basic version 6 under Windows XP)  [RECOMMENDED]

This updated version of Aery should work fine in Windows 95, 98, ME, NT, 2000, XP (32 or 64 bit), Vista (32 or 64 bit), 7 (32 or 64 bit) or 8.

(Visual Basic and Windows etc. are Copyright Microsoft Corp, yadda yadda yadda.)

Aery32 has some enhancements, additions, and bug fixes over the original version.  See the Aery32 Revision Notes section below.

Installation Instructions

1.     Copy (or download) into a folder somewhere on your computer.

2.     Unzip within this folder.

3.     Delete - you don't need it any more unless you want to give it to a friend.

4.     Run “setup.exe”

5.     Follow the onscreen prompts to install Aery32.

6.     Unless you choose otherwise, a shortcut for Aery will be added to your Start menu.  You may run Aery32 using this shortcut.  Aery32 will not automatically add a shortcut to your Windows desktop.

7.     You may now delete the installation files that came out of

8.     If you need to uninstall Aery32, you may do so through the Windows control panel.

 Aery (ancient 16-bit program, originally written in Visual Basic version 3.0 for Windows 3.1.)

This original version of Aery should work fine in Windows 3.1, 95, 98, ME, NT, 2000, XP (32 bit), Vista (32 bit) or 7 (32 bit).  Since it is an old 16-bit program, it will NOT work at all under the 64-bit versions of XP, Vista, Windows 7, or Windows 8.  Unless you are using an ancient computer, I strongly recommend that you use Aery32 (see preceding section).

Installation Instructions (for Windows 95 and newer)

There is no automatic installation, so you'll need to follow the following steps.

1.     Create a program directory called aery somewhere on your hard drive.

2.     Copy (or download) into this directory.

3.     Unzip within this directory.

4.     Delete - you don't need it any more unless you want to give it to a friend.

5.     Right-click on aery.exe and choose "Send To / Desktop (create shortcut)".

6.     You'll now have a shortcut to Aery on your desktop.  To run Aery, just double-click on this shortcut.

7.     To uninstall Aery, just delete the entire Aery directory and any shortcuts that you made.

Documentation & Instructions

(the following files are all included with Aery and Aery32 and will be located in the same folder as the program)

  • readme.pdf
  • Aery presentation slides.pdf (requires free Adobe Acrobat reader) - an overview of the program and its capabilities
  • Aery technical paper.pdf (requires free Adobe Acrobat reader) - gives background, instructions on how to use the program, and the equations behind how it works
  • Aery building instructions.pdf (requires free Adobe Acrobat reader) – instructions on how to build a flyable glider starting from the plans printed from Aery
  • sample group memo.pdf (requires free Adobe Acrobat reader)
  • Several sample glider design files (.ae) and wood configuration files (.cfg) for Aery

Quick Start Info

Start Aery or Aery32.  Click on File/Open Design.  Click OK on the dialog box that pops up.  Select TG1.AE (in Aery) or “Sample glider - conventional design” in Aery32 and click OK.  The current glider design is shown at the bottom of the window.  To adjust the design either left-click and drag on the red bars to adjust the numbers, or right-click on a bar and a little window will pop up to let you directly type in a number.  There are 5 tabs across the top of the window.  The left four tabs are used to design parts of your glider; the right-most tab displays information from the analysis of your design.

To analyze your current design, click on Analyses/Will it Fly? (or hit the F3 key)  You'll now be told whether or not the glider will fly, comments on what may be wrong, and suggestions that may make the glider better.  If you scroll down in the top window, you can see all sorts of data about your glider design.  The Aery Evaluation Number is the program's opinion of your design's "goodness".  (Bigger numbers are better.)

For greater accuracy, you need to give Aery some details about the wood that you will be using to build your gliders.  This is done through Configuration files; they may be opened, edited, and saved through the File menu.  These details are also saved in each of your glider design files.  Several sample configuration files are provided.

When you select File/Print Plans, Aery will send 3 pages of plans for the current glider design to the default Windows printer.  Aery32 will send 4 pages of plans.

 For more info, see the PDF files included in the program folder.  Also, please see the Aery FAQ's and Aery Tips on the web site.

Author Contact Info

Alan Estenson, estenson [at] mn-rocketry [dot] net

Feel free to send me bug reports, suggestions, or interesting glider design files that you've created.  I can't promise that I'll ever again work on this program, but I will keep your comments on file, just in case.  Interesting new glider designs may be made available for others to download from the Aery web pages.

Aery is my version of the word "aerie" which is the word immediately before "aero" in my dictionary.

I originally wrote this program as part of my project requirements for a Master's of Science degree in Aerospace Engineering from the University of Minnesota.


Please look at Aery FAQ's and Aery Tips before emailing questions to me.

NO, there is NOT a technical support telephone number for this program!

Aery32 Revision Notes (version 2.10)

  • Updated from an ancient programming environment (Visual Basic 3.0) to one that's merely elderly and obsolete (Visual Basic 6.0). Long file names may now be used when saving Design and Configuration files.

  • Loading of Configuration files changed to use standard common dialog box instead of custom screen. Configuration files no longer have to be located in the same directory as the program. (DEFAULT.CFG must stay in the same directory as the program, or it will crash!)

  • A warning dialog now pops up when File/Print Plans is selected from the menu. Four pages of plans are now printed; the fourth page consists of the text from the Information tab.

  • New option added under the Preferences menu, "Only show full glider view". When this option is not checked, all graphics screens are the same as the original version of Aery. When this option is checked, a full planform view of the glider is shown for all tabs except Vertical Tail.

  • Various little bugs squashed. A few little coding enhancements added here and there.

Acknowledgements and Thanks

This program was inspired, in part, by the similar Macintosh program "Glider Design" by Mr. Michael Kamprath and the Michigan Space Grant Consortium.  However, Aery was a completely independent programming effort.

Thanks to Gerald Holt at “Project Lead The Way”,, for encouraging me to create Aery32 so that the program could continue to be used as schools switched to 64-bit versions of Windows.  When I started creating this program in 1995, I couldn’t have imagined that it would still be in use some 18 years later! - Alan

Development of this program was originally supported by