Methodology for simulating ancient technical systems

Nowadays, in a complex industrial world where, everything has to be done quicker and quicker and must be more and more profitable, industrial environments are transferred, transformed, given up... It is the global humanity technical knowledge that disappears. The method consists in "reversing the design time axis " and proposes, starting from the technical object and available information, and thanks to the use of specific tools, to model the system for its use in virtual situation. This article is mainly a status of the state of the art of the possibilities that could be envisaged for those applications.