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First generation of Integrated Modular Avionics (IMA), currently onboard in aircraft type Airbus A380, A400M, or designed for Airbus A350, and whose principle was initially to introduce some common processing resources, had been developed in such a way to reduce the quantity of embedded equipment part number, and to harmonize the nature of the avionic units by minimizing the specificity of electronic equipment: thus, for instance, the number of processing units in the A380 is half that of previous LRU-based avionic generations.

Nowadays, numerical modeling/simulation is an essential tool. It is used in all the design stages in order to improve quality and to reduce costs and time-to-market. As models address increasingly multiphysics and complex phenomena throughout the V-cycle process, modelers are confronted, sooner or later, with the need for model reduction. This paper describes the set-up of a virtual prototyping platform and highlights the interest of integrating energetic aspects, which are used to compute new model reduction criteria. A similar energy approach, “MORA” using “Activity”, is already used by Bond Graphists in order to obtain the “Proper Model” ([7] and [8]). The methodology presented here (PEMRA: “Power & Energy -based Model Reduction Algorithm”), with new power and energy criteria, makes it possible to obtain a simpler and more accurate reduced model than with MORA methodology, while improving the system's energy information.