Streamlining IMA integration through model-driven methodologies

Avionics systems integration is an inherently complex undertaking. In addition to ensuring that basic functionality is satisfied, the systems integrator must maximize the systempsilas flexibility and reliability while minimizing weight and cost of change. With the introduction of integrated modular architectures (IMA) based on open standards, many traditional integration issues have been greatly improved. However, additional integration responsibilities arise due to having a large number of functions developed by independent suppliers all sharing the same physical resources. This paper describes the benefits of incorporating model-driven methodologies and associated tools into the systems integration process through Model Driven Integration (MDI). It describes how a system model can not only streamline the additional responsibilities but also establish a highly productive systems development environment and allow for virtual integration. In addition, this paper discusses a number of side- benefits that grow out of having a modeling tool platform such as enhanced team communication and automation opportunities. The analysis of avionics architectures and the use of model-driven methodologies to increase IMA manageability is based upon the authors' experience in developing platform computing systems at GE Aviation. GE Aviation has developed open system IMA architectures for both commercial aircraft and military aircraft.