In the study of the response of complex engineering systems, especially in the aerospace field, computer experiments play a crucial role, enabling the simulation of the behaviour of such systems through the implementation of mathematical models, that can be extremely complex. For instance, optimization problems involving aerodynamic surfaces, turbomachinery components, as well as structural and thermo-fluid dynamic assessments that arise in various phases of aerospace design, require numerical simulations that are often extremely demanding in terms of simulation time and computational costs, when a high level of accuracy is sought. In these cases, the use of High Fidelity models, which aim for the most accurate representation possible of the phenomenon, often becomes infeasible.