TOWARDS HIGHER CHANGEABILITY FOR AIRPLANE CABIN SOFTWARE

摘要

The development of airborne software is driven byrnrigorous safety requirements. Hence, it needs to berncertified for adhering to safety standards set byrngovernmental agencies, based on different criticalityrnlevels. Additionally, quickly changing technologies andrnthe resulting obsolescence of system parts increase thernneed for good changeability of avionic software.rnHowever, the design of current applications in the cabinrnof commercial airliners is mainly focussing on safetyrnstandards and on a good adjustment to the underlingrnhardware platforms for performance reasons.rnChangeability has been widely neglected so far. We seerncomponent-oriented and strictly layered softwarernarchitectures as a key enabler to overcome thesernchallenges in the future. In this paper we discuss thernfundamentals of a new architectural design for airplanerncabin systems, integrating established design principlesrnfor modular enterprise systems with high-reliabilityrnrequirements of aviation systems. Our proposed approachrnreduces module coupling as well as complexity and hencernincreases maintainability and changeability of aviationrnsystems. Moreover, it is fully compatible with state-ofthe-rnart aviation standards, such as ARINC 653.