The Department of Defense (DoD) is seeking proposals for creating a digital twin of the B-52H legacy aircraft system. The objective is to develop a faster and more cost-effective way to integrate new equipment at the system design/digital engineering level. The digital twin will include CAD models and SysML models and will be connectable to various models in different systems. The end goal is to have a digital engineering environment that is dynamically connected to an accredited simulation environment, enabling seamless integration of digital engineering models with other systems/products. The project will involve a Phase I feasibility study and system concept definition, followed by a Phase II project to further develop the digital twin and create a well-defined deliverable prototype for commercialization. The Phase III effort will focus on transitioning the technology to government and commercial applications, achieving a high technology readiness level (TRL). The potential impacts of this technology include safer, more efficient, and cost-effective testing and integration of new equipment with legacy aircraft. The commercialization potential is significant, with potential applications in the aerospace industry for aerospace companies, government agencies, and military organizations. The project duration and funding specifics can be found in the solicitation notice on grants.gov or the DoD SBIR website.