When modeling an aircraft structure that features a fuselage (or "bus structure") without landing gear, the design shifts focus entirely to the airframe's primary structure and its resilience to forces other than ground impact. This model represents the semi-monocoque shell of the aircraft, showing the intricate network of internal supports: the bulkheads (or frames) that define the cross-section, and the stringe and longero that run lengthwise to carry bending and toional loads. Designed in SolidWorks, this model is essential for students and professionals studying structural integrity, stress analysis (FEA), and design for stiffness, providing a clear visualization of how the internal skeleton supports the entire aerodynamic envelope, stripped down to its core load-bearing components.