A diverse range of application examples exists where the proposed technology could be beneficial. These include defense applications related to flight vehicles design such as UAVs/UCAVs, but also next generation energy-efficient automobile design, wind turbines, hydroelasticity, civil and earthquake engineering, and, in general, any design application that involves multiple disciplines, may involve time-dependent responses, and is amenable to multifidelity modeling. The proposed research and development will result in new multifidelity design methods which leverage efficient low-fidelity models. These methods will enable the use of high-fidelity analyses in highly integrated aeroelastic designs of unconventional airframes and new structural and propulsion concepts requiring system-wide cross disciplinary integration. The proposed technology applies to aerospace vehicles in the subsonic, transonic, supersonic, and hypersonic speed regimes, and will help NASA reach its goal of ensuring long-term investments and fundamental research in relevant emerging fields that can be integrated into system-level, multidisciplinary capabilities.