How do you assess the feasibility of a novel aircraft configuration?

Novel configurations (blended wing body, truss-braced wing, distributed propulsion) require systematic feasibility assessment. Analysis framework: Mission analysis - Does configuration address market need? What performance gains? Aerodynamics - CFD for unconventional shapes, low-speed handling, and integration effects; Structures - Load paths, pressurization challenges (non-circular), and weight estimation; Systems - Integration challenges, maintainability, and emergency egress; Propulsion - Integration, noise, and failure cases. Risk assessment: Technology readiness levels for key elements, Development cost and schedule, Certification path (special conditions likely), and Market acceptance. Comparison: Benchmark against advanced conventional, Quantify benefits (fuel burn, noise, emissions), and Identify showstoppers early. Process: Conceptual design study, Down-select promising concepts, Focused technology development, Scale model testing, and Subscale demonstrators. Timeline: Radical configurations require 15-25 year development. Success factors: Substantial benefit (>20% fuel burn), Acceptable risk profile, and Business case closure. Many concepts never reach production; systematic assessment is essential.