Integrated modelling of system functional, maintenance & environmental factors

In order to ensure that the Ultra Reliable Aircraft Model (URAM) simulates maintenance free operation (MFOP) with sufficient fidelity, it has been necessary to model component reliability as modified by usage and stress during operational activity, to incorporate complex system functional definitions, and to allow flexible treatment of maintenance. The methods chosen allocate components into three distinct groupings that reflect these relationships. They allow the simulation to explore the interrelationship between these issues and they ensure that the simulation can meet the requirements of being a total scenario simulation.