Improvements to the Da Vinci Aerial Screw as a VTOL Thrusting Alternative

This study explores dominant geometric parameters of aerial screws, drawing inspiration from Leonardo da Vinci's visionary designs dating back to the 1500s. Through Computational Fluid Dynamics (CFD) analyses, a shapeconforming vortex at the tip of the screw functions as a thrusting mechanism, similar to that observed in swept and delta wings. The "da Vinci" vortex, a helical structure at the screw's tip, serves as a focal point for assessing the impact of design variables on aerodynamic efficiency. Detailed analyses of screw pitch and taper reveal nuanced effects on thrust generation, offering valuable insights for optimizing aerial screw performance. This work provides a comprehensive understanding of historical roots and contemporary advancements in aerial screw technology, paving the way for efficient Vertical Take-Off and Landing (VTOL) alternatives.