Design improvement of complex engineering systems for operation in uncertain conditions- implementation of model for SAR satellite design

Accompany with technology improvement, traditional systems have been superseded with complex engineering systems. Operation in uncertain and dynamic environments is one of the most important characteristics of these types of systems. The perturbations, which exist in uncertain and dynamic environments, can extremely affect the value delivery of complex engineering systems to their stakeholders. So improving the ability of these systems against uncertainty seems inevitable. Therefore, in this study we have proposed some design principles and rules which when added to system architecture leads to have more viable systems against perturbations in uncertain and dynamic environments. Also, a 7 step mathematical model is presented for analyzing the amount of design principles’ impact on systems ability against uncertainty. The main characteristics of proposed model are: describing the uncertainty in the operational environment, analyzing how the uncertainty will affect the functional and physical characteristics of the system and finally representing the regions in the system architecture that are mostly impacted by the operational uncertainties   The applicability of the proposed model is presented by using a descriptive example of synthetic aperture radar satellite as a complex engineering system and finally the results of that have been analyzed by more details.