Abstract
Digital twins, an innovation originally emerging in the early twenty-first century, have rapidly evolved to become a cornerstone technology in the international aviation industry and smart city infrastructures. Their application extends beyond asset and systems management, paving the way for enhanced operational efficiencies and sustainability initiatives. This technology, now integral to smart cities and airport design, facilitates real-time data collection, energy management, and maintenance tracking, thus playing a pivotal role in the ongoing Industrial Revolution 4.0 and benefiting from the advancements in 6G technologies. The potential of digital twins is particularly significant in the realm of global travel, where they are transforming commercial airport management. Moving beyond the traditional focus on profit optimization, digital twins, augmented by robust AI and Digital Airport and Building Information Modeling (BIM) technology, have overcome previous challenges related to sensor reliability and model failure. These advancements are crucial in improving flight tracking, construction, maintenance, and operational efficiency, directly contributing to the reduction of carbon emissions in global transportation—a persistent concern among researchers and policymakers. This study delves into the role of digital twins and extended reality (XR) technologies in fostering sustainability within the aviation sector and smart city planning. The integration of XR with digital twins offers immersive and interactive solutions, enhancing operational procedures and decision-making processes. Moreover, the concept of digital humanism, involving the alignment of metaverse virtual networks with physical assets, emerges as a transformative approach in this domain. By harnessing the synergy between these technologies, this study presents a forward-thinking perspective on mitigating climate change impacts and advancing sustainability in global travel, underscoring the significance of digital twins, XR, and digital humanism in shaping the future of aviation and urban development.