aircraft 3d model

Create a single-piece 3D printable aviation benchmark model inspired by a modern passenger jet. It should function like a Benchy for testing 3D printer quality, including layer consistency, dimensional accuracy, overhangs, bridging, and surface finish. Use a clean, minimalist design with smooth curves and simple geometry. Include a rounded nose, fuselage, swept wings, two underwing engines, vertical tail fin, horizontal stabilizers, and simple cockpit windows. Add subtle recessed details to test print precision without making parts fragile. The model must print without supports on most FDM printers. Use one solid colour only, with no textures, decals, logos, or moving parts. Size should be around 120–150 mm long with a flat underside or integrated base for easy printing and good bed adhesion. Clean, modern, and practical.