Silent Wings simulates the movement of the aircraft by dividing the aircraft into several force-generating elements, and integrating these forces acting on the aircraft mass over time. Several text files are used to define the physics of an aircraft:
- mass.dat defines the mass and inertia properties of the aircraft, including water ballast and fuel
- aero.dat defines the aerodynamic parts of the aircraft such as airfoils, wings and fuselages
- gear.dat defines the parts that interacts with the ground, such as the landing gear and hardpoints at the fuselage
- engine.dat can define an optional engine with propeller
- controls.dat defines the cockpit controls
- autopilot.dat defines the properties of the aircraft autopilot
We recommend taking a look on existing aircraft models and study their .dat files to see how things are done.
Besides these files you will also need a set of airfoil polars in the airfoils directory.