Search results
Results From The WOW.Com Content Network
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.
The aluminum body was built by the Ludewig Brothers of Essen. Subsequent tests of the motorized model showed a slightly higher but still impressive drag coefficient of 0.186. [2] The Schlörwagen was built on a modified chassis of the Mercedes 170 H. The wheelbase was 2.60 meters, the vehicle was 4.33 meters long and 1.48 meters high.
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.
The idea was to create vehicles with the lowest possible drag coefficient. All the cars featured large rear bumpers and curved fins. They were built upon the Alfa Romeo 1900 chassis. Each of the three cars was presented at the Turin Auto Show, in 1953, 1954 and 1955 respectively. The lowest of the three cars' drag coefficient was 0.19, [2] an ...
For premium support please call: 800-290-4726 more ways to reach us
As the size of the car prohibited meaningful wind tunnel testing, the streamlined shape of the car was refined entirely through the use of computational fluid dynamics by MIRA Ltd, which has enabled the car to obtain a very low coefficient of drag of only 0.147 and a C d A value (drag coefficient × frontal area) of only 0.129 m 2. The fuel ...
The total aerodynamic drag is minimal because both the drag coefficient and frontal area are small (see drag equation). The drag coefficient (C d) is 0.159, [4] compared to 0.30 - 0.40 for typical cars. The external dimensions of the car are 3.47 m (11.4 ft) long, 1.25 m (4.1 ft) wide and 1.10 m (3.6 ft) tall.
The Audi A2 1.2 TDI had the lowest drag coefficient of any car in the world at the time of its launch. [18] It was also one of the most economical and least polluting, only emitting 81 g/km (German emission standard D4) to 86 g/km (D3 emission standard) CO 2 emissions.