Mastering safety and reliability in a model based process

International audience; This article follows a line of papers focused on defining a method to improve the realization of reliability analysis during the System Engineering process. As MBSE becomes a funda-mental concept for specifying and designing systems, our me-thod takes full advantages of this approach and try to provide tools to ease the specification stage and the integration of RAMS early in the conception process. Our method called MeDISIS is related to the use of SysML to support MBSE and RAMS activities. Currently, MeDISIS is used within an industrial project to de-sign a hypersonic aircraft which is a relevant complex and critical system. During this project, MeDISIS has been adapted to take into account technologies devoted to embed-ded systems. Furthermore, MeDISIS had to comply with the tools, used by our industrial partners during the design stage. In this work, we present the new architecture of MeDISIS, and the process added recently.