The European Space Agency (ESA) is studying an active debris removal mission called e.Deorbit which is intended to capture an ESA-owned derelict satellite in low orbit and safely crash it into the ocean in a controlled atmospheric reentry. The Airbus Defence & Space proposal for this project used Model Based System Engineering (MBSE) to simultaneously define the mission requirements and the architectures. In a parallel internal study, Airbus DS engineers used ModelCenter Integrate and MBSEPak to integrate the simulation tools used to evaluate the performance of the architecture with the system model.