This paper presents a comprehensive numerical and experimental study on the performance of drone propellers, focusing on the development and evaluation of innovative blade designs. For this purpose, we developed a mathematical model that describes the thrust performance of the propeller depending on various geometric and aerodynamic parameters. Building on this model, we developed a simulation program using the Matlab programming language, enabling parametric analysis of propeller blades for different profiles. The simulation environment also allowed us to evaluate performance improvements through the integration of a diffuser around the blade perimeter, aiming to improve airflow characteristics and thrust efficiency. We 3D modeled the optimized profiles generated by computer simulations and produced them using 3D printing technology. Additionally, we also designed and produced the diffuser in different profiles using 3D printing. To verify the theoretical and simulation results, we built a dedicated experimental test rig for drone propellers. This setup includes a thrust measurement system and enables controlled testing of different blade geometries, both with and without diffusers. The experimental tests confirmed the significant impact of the blade profiles on thrust performance, as well as a considerable effect resulting from the installation of the diffuser around the propeller. The results showed good agreement between computer simulations and experimental measurements. The innovative blade designs tested in this study demonstrate measurable improvements in thrust efficiency, supporting their potential for application in advanced propulsion systems. The study offers an integrated approach that combines simulation, design innovation, and experimental validation to guide future developments in drone propeller technology.