After a year of negotiation and uncertainties, France and Germany found a new agreement for the development of the future air combat system (FCAS) next 6th generation aircraft (Vincent & Bezat, 2022). On Thursday 1st 2022, Airbus and Dassault, the main constructors for the FCAS, announced the launch of the next phase of development for the fighter jet. This phase is mainly about the design of the demonstrator for 2029.