This paper introduces an approach to the design and implementation of a device with a surface area control mechanism tailored for smart passive adaptive deployment, useful in various engineering applications. By embedding planar linkages onto cylindrical ruling surfaces, a cylindrical developable mechanism structure is engineered which can modulate its radial span and hence projected area. This innovation is underpinned by the integration of non-conventional actuation techniques, notably shape memory alloy (SMA) springs, affording the mechanism the potential ability to effectuate projected surface area adjustments autonomously without external power sources or intricate control algorithms, facilitating seamless real-time adjustments. Such a concept holds promise across domains such as thermal management and underwater submersibles, where the dynamic surface area adjustment capability promises enhanced heat transfer regulation, improved energy efficiency, or superior hydrodynamic performance. The proposed mechanism advances the state-of-the-art in passive systems, opening avenues for innovative applications in fields requiring adaptive surface area control. The methodology employed in the design and synthesis process serves as a blueprint for future research endeavors seeking to develop efficient and autonomous mechanisms for diverse engineering challenges.