The main idea of FDS is the simulation of the realistic dynamic behaviour of an aircraft. Therefore FDS includes · calculation of the aerodynamic forces for the aircraft parts (wing, fuselage, rudder, elevator, landing gears, etc.) with analytic equations and parameters from wind tunnel experiments, · calculation of the propeller thrust with analytic equations, · calculation of the jet engine thrust with solving the gas turbine process with/without bypass and with/without afterburner, · calculation of the gear forces as a spring/damper system and of the wheel forces with analytic equations, · configuration of the aircraft parameters in a user friendless GUI (Graphical User Interface) The aircraft parameters are editable in a GUI-GraphicUserInterface, build with Tcl/TK (http://www.scriptics.com/resource/software ). FDS can be used for · learning flying as a pilot sitting in the aircraft or as a pilot fixed to ground with RC-RemoteControl of an aircraft model, · creating aircrafts in different configurations and testing their characteristics in flight, · flying an Air Race. For more informations you should visit http://www.flight-dynamic-simulator.de