Ducted Propeller V0.1.2

The 3D model represents a fully detailed ducted coaxial propeller system designed with precision aerodynamic geometry and clean manufacturable surfaces. The assembly consists of a streamlined outer duct, a central hub, six structural struts, and a pair of counter‑rotating propellers. The duct features a smooth, rounded inlet lip that reduces flow separation and improves overall aerodynamic capture. Its inner and outer surfaces maintain consistent curvature, giving the structure a lightweight yet rigid profile suitable for UAV propulsion systems. Inside the duct, four evenly spaced NACA 0010 airfoil‑shaped struts connect the outer shell to the central hub. These struts are swept and tapered to minimize drag and provide structural support without disturbing the internal flow path. At the core of the design is a coaxial rotor pair, each consisting of four blades with a tapered planform and a rounded dome tip. The blades transition smoothly from a wider root to a narrow tip, incorporating twist and curvature for efficient aerodynamic loading. The upper rotor is oriented clockwise, while the lower rotor rotates counter‑clockwise, enabling torque balancing within the assembly. The entire model is built using clean, watertight surfaces and parametric features, allowing easy modification of blade geometry, duct dimensions, and strut profiles. The design emphasizes manufacturability, symmetry, and aerodynamic efficiency, making it suitable for advanced UAV propulsion concepts and high‑performance ducted fan applications.