The X-Plane program has been instrumental in advancing aerospace technology through groundbreaking projects. The Bell X-1, the first of these experimental aircraft, famously broke the sound barrier in 1947, marking a monumental leap in aviation history. Following the X-1, notable projects like the X-15 set altitude and speed records in the 1960s and helped gather valuable data for space missions. The X-29, with its forward-swept wings, tested advanced flight control technologies, while the X-43, part of the Hyper-X program, achieved hypersonic flight at speeds over Mach 9. These X-planes have not only pushed the limits of aviation but also contributed technologies that have enhanced commercial and military aircraft, underscoring the program’s pivotal role in shaping modern aerospace engineering.