Structural Admissibility and Material-Driven Stability in Hypersonic Flight

This research program investigates the fundamental conditions under which sustained hypersonic flight is physically and structurally admissible. Rather than optimizing specific vehicles, configurations, or material compositions, the work adopts a constraint-based, model-agnostic framework designed to identify necessary conditions for stability in extreme flow regimes. Classical assumptions embedded in predefined turbulence models, fixed material properties, empirical heat-transfer laws, and control-centric design methodologies are explicitly excluded. Across multiple studies, hypersonic flight is reframed as a materials-driven, co-evolutionary systems problem in which stability emerges only through coupled interaction between flow, geometry, and material response. This approach challenges long-standing assumptions of passive material endurance and control-dominated stability, offering a structural explanation for persistent experimental difficulties observed in hypersonic programs.