# What's the most aerodynamic shape?

• kelvin lam
For speeds lower than the speed of sound, the most aerodynamically efficient shape is the teardrop. The teardrop has a rounded nose that tapers as it moves backward, forming a narrow, yet rounded tail, which gradually brings the air around the object back together instead of creating eddy currents.
• ### What is the drag coefficient calculator?

The drag coefficient calculator calculates the drag of an object as it moves through a fluid environment such as water or air. The drag cofficient is a dimensionless unit (has no units) that is used to quantify the drag or resistance of an object in a fluid environment.
• ### How are cars aerodynamic?

The aerodynamic abilities of a car are measured using the vehicle's coefficient of drag. Essentially, the lower the Cd, the more aerodynamic a car is, and the easier it can move through the wall of air pushing against it.17 mar 2009
• ### Is drag proportional to velocity?

Drag force is proportional to the velocity for low-speed flow and the squared velocity for high speed flow, where the distinction between low and high speed is measured by the Reynolds number. Even though the ultimate cause of a drag is viscous friction, the turbulent drag is independent of viscosity.
• ### Which car is more aerodynamic in shape?

The most aerodynamically-efficient shape for a vehicle is, in theory, a teardrop. A smooth shape minimises drag and the profile, if correctly configured, keeps airflow attached to the surface rather than breaking free and causing turbulence.30 mar 2021
• ### What increases drag?

Drag increases with the density of the fluid (ρ). More density means more mass, which means more inertia, which means more resistance to getting out of the way. The two quantities are directly proportional.