Drone system development requires structured methods for creating efficient operation and functional design. This research examines the implementation of the architecture analysis & design integrated approach (ARCADIA) methodology within Capella software for designing a drone system. ARCADIA introduces an approach which divides design work into four progressive phases including Operational Analysis (OA), System Analysis (SA), Logical Analysis (LA) and Physical Analysis (PA). Capella enables model development throughout each stage of the process. The OA stage performed identification of mission actors, activities and scenarios which would be applicable to the drone system. During the SA stage the boundaries of the system were defined together with the distribution of operating responsibilities between the drone system and outside actors. LA analysed the drone by dividing its functions into logical units. Moreover, PA conducted the conversion of program logic into practical components that could be deployed for real-world application. This study demonstrates that ARCADIA, Model-Based Systems Engineering (MBSE) methodology effectively supports the drone system design. During design phase the model-based approach kept systematic representation of the system in a consistent manner. These stages broke down the system development process which enabled a structured examination starting from high-level mission goals and ending with component definitions together with specified functionalities and communication protocols. The core capabilities of Capella established fundamental operations for creating models together with their analysis and maintaining traceability. This research sets essential groundwork for researchers who want to develop application-based drone capabilities while integrating these functionalities into other design systems.