This is the webpage for the software Tornado, a Vortex Lattice method implemented in MATLAB.

The new version, Tornado 136.7, is available in the downloads section.

Tornado is a Vortex Lattice Method for linear aerodynamic wing design applications in conceptual aircraft design or in aeronautical education. By modelling all lifting surfaces as thin plates, Tornado can solve for most aerodynamic derivatives for a wide range of aircraft geometries. With a very high computational speed, Tornado gives the user immediate feedback on design changes, making quantitative knowledge available earlier in the design process.

The code is implemented in MATLAB and is being used at many universities and corporations around the world. It is still in a development phase with new functionality added. The code can either be run with a text-based interface or in batch mode.

Legal Information

The Tornado software is generally distributed under the GNU General Public License. Please note that MATLAB source is proprietary and that some restrictions on MATLAB usage are in effect. See more in your MATLAB license. The design of aircraft is heavily regulated in most parts of the world, make sure you fulfill all juridical requirements in your location before doing actual design.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public license as published by the Free Software Foundation; either version 2 of the license, or (at your opinion) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Developers or companies who require a closed license of Tornado should contact the sales team for a commercial license.

If you want to purchase a  copy of the code over the counter instedad of downloading it, contact out sales team.