In this project the vortex affectation generated by a commercial airliner to a RPAS (Remotely Piloted Aircraft Systems) when both are at enroute phase is studied. The objective is to perform a vortex detection system that allows the RPAS to know if it can fly through its assigned route with no risks, or if it will have to modify it as a consequence of the vortex existence generated by the commercial airliner, producing a hazard situation, where the RPAS could turned upside down and therefore, to have an accident or produce another one. To execute it, a vortex model will be performed, which will be used at the collision model. Furthermore, there will be two collision models. One will consider the airliner flying in a straight line, and the other one will take into account that the commercial aircraft can make turns in order to change its heading.