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FlightGear Flight Simulator project is an open-source, multi-platform, cooperative flight simulator development project. Source code for the entire project is available and licensed under the GNU General Public License.

The goal of the FlightGear project is to create a sophisticated flight simulator framework for use in research or academic environments, for the development and pursuit of other interesting flight simulation ideas, and as an end-user application. We are developing a sophisticated, open simulation framework that can be expanded and improved upon by anyone interested in contributing.

There are many exciting possibilities for an open, free flight sim. We hope that this project will be interesting and useful to many people in many areas.

User Documentation Getting Started Official FlightGear Manual "The Manual" PDF and HTML. New to FlightGear FAQ Hardware Recommendations Recommended Software Troubleshooting Problems Volunteer Real Life Experience Using Flightgear Aircraft Suggested Flights Starting in the Air Multiplayer Howto Carrier Howto Air-Air Refueling Howto AI Systems Installing Scenery Improving Framerates Instant Replay Command Line Parameters Preset Properties Realism Flying Resources Definitions Acronyms Getting IFR Charts Understanding Altitude Understanding Navigation Understanding Propeller Torque and P-Factor Understanding Aerodynamics Communications Weather Avionics and Instruments

Developer Documentation Coding Guidelines Building Flightgear Building Terragear Submitting Patches Janitors Development Resources Extension Support Code Internals Property Tree Subsystems Commands FDM API Nasal scripting language Modeling Modeling - Getting Started Model Import and Export Modeling Resources Aircraft Information Resources Todo Bugs FGFS Todo Aircraft Todo Goals Feature Requests / Proposals / Ideas Miscellaneous Glass Cockpit Projects Tutorial Resources Copyright Inquiry FlightGear - Gear