Drag is a force that opposes an object's motion through a fluid, such as air or water, and is influenced by factors like velocity, surface area, and fluid density. It plays a crucial role in engineering and physics, affecting the design and efficiency of vehicles, aircraft, and various structures.
Blade aerodynamics focuses on the study of airflow over and around blades, such as those in turbines or propellers, to optimize performance and efficiency. Understanding how air behaves in response to blade design can lead to reduced drag, increased lift, and overall improved energy conversion processes in various applications.