Simulation packages provide a valuable framework or environment to study the interaction between aircraft, including Unmanned Aerial Vehicles (UAVs), in the existent air traffic in near mid-air collision (NMAC) scenarios. The proposed simulation package is based on the open-source JSBSim Flight Dynamics Model (FDM) and our developments represent the UAVs with the required precision to model those interactions. This tool has been validated and tested in UAV computer models and is currently being used in 4D encounters and avoidance maneuvers. The final objective of this paper is to provide a simplified model version of the current package, the including the minimum requirements for the design of a UAV in JSBSim, and guide any modeler through the UAV computer design task
