System Testing in the Avionics Domain

When developing a new aircraft, the airframer encounters various (partly contradictory) demands and requirements. To deal with them, current avionics systems are based on the framework of integrated modular electronics which allows to use COTS products for less critical functions and uses integrated modular avionics (IMA) technology for safety-critical avionics functions. Since this evolution affects the entire development, new processes and means for the development and the verification and validation of avionics systems are required.This thesis addresses this evolution from two angles: 1) A systems engineering part introduces the general processes and approaches to be considered when developing and testing avionics systems and describes how the technology and the development processes have evolved, particularly with respect to system testing in avionics. 2) Two case studies detail the described testing activities during system integration for two newly identified testing areas.