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The term drag area derives from aerodynamics, where it is the product of some reference area (such as cross-sectional area, total surface area, or similar) and the drag coefficient. In 2003, Car and Driver magazine adopted this metric as a more intuitive way to compare the aerodynamic efficiency of various automobiles.
Drag coefficients in fluids with Reynolds number approximately 10 4 [1] [2] Shapes are depicted with the same projected frontal area. In fluid dynamics, the drag coefficient (commonly denoted as: , or ) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water.
While they do not have the biggest impact on the drag coefficient due to their small size, radio antennas commonly found protruding from the front of the vehicle can be relocated and changed in design to rid the car of this added drag. The most common replacement for the standard car antenna is the shark fin antenna found in most high ...
The Kammback, along with other aerodynamic modifications, gave the prototype a drag coefficient of 0.25. [ 12 ] The earliest mass-produced cars using Kammback principles were the 1949–1951 Nash Airflyte in the United States and the 1952–1955 Borgward Hansa 2400 in Europe.
Drag coefficient (ratio) (ratio) (ratio) economics, top speed, range lower is better for moving into/through a fluid(air/water), higher is better for stopping/redirecting with a fluid Friction or Friction coefficient lbf or (ratio) lbf or (ratio) N or (ratio) acceleration, braking distance, traction, fuel consumption, tyre wear
Today's hybrids are just now catching up to the best cars from 70-80 years ago in drag coefficient, and cutting aero drag is reponsibile for about 70% of their fuel economy improvement over typical gas cars. Slightly reduced weight and a hybrid powertrain along with use of CVT and smaller engine is the rest. This is embarassing.
This template displays the symbol for coefficient of drag with an optional link to Drag coefficient (link=yes) or Automobile drag coefficient (link=car) and an optional value. If long=yes then the phrase 'drag coefficient of' is added to the front to make it easier to read as part of a full sentence.
A drag count is a dimensionless unit used by aerospace engineers. 1 drag count is equal to a of 0.0001. [ 1 ] [ 2 ] As the drag forces present on automotive vehicles are smaller than for aircraft, 1 drag count is commonly referred to as 0.0001 of C d {\displaystyle C_{d}} .