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A boattail can greatly reduce a vehicle's total drag. Boattails create a teardrop shape that will give the vehicle a more streamlined profile, reducing the occurrence of drag inducing flow separation. [17] A kammback is a truncated boattail. It is created as an extension of the rear of the vehicle, moving the rear backward at a slight angle ...
Persu car (1922–23), designed by Romanian engineer Aurel Persu, who improved on the Tropfenwagen by placing the wheels inside the car body; Burney car (1929-1931), working prototypes designed by Dennis Burney and manufactured by Streamline Cars; Dymaxion (1933–1934), U.S. "teardrop" car [44] Stout Scarab (1932–35, 1946), aerodynamic US car
The Chrysler Airflow is a full-size car produced by Chrysler from 1934 to 1937. The Airflow was the first full-size American production car to use streamlining as a basis for building a sleeker automobile, one less susceptible to air resistance.
Simple model for energy vs vehicle speed. Air resistance is the main cause expended energy per distance when driving at high steady speeds. [11] At higher speeds, wind resistance plays an increasing role in reducing fuel economy in automobiles. At 60km/h, the global average speed, energy loss due to air drag in fossil fuel cars is approximately ...
The mean camber line or mean line is the locus of points midway between the upper and lower surfaces. Its shape depends on the thickness distribution along the chord; The thickness of an airfoil varies along the chord. It may be measured in either of two ways: Thickness measured perpendicular to the camber line.
A typical vehicle fire suppression system has five key components: Fire-detecting linear wire or spot sensors, A control panel to detect a fire and alert the operator, Actuators discharge automatically or manually to activate the system, Tanks filled with fire-fighting agent, and; A distribution network of tubes, hoses, and nozzles.
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The goal of many spoilers used in passenger vehicles is to reduce drag and increase fuel efficiency. [4] Passenger vehicles can be equipped with front and rear spoilers. Front spoilers, found beneath the bumper, are mainly used to decrease the air underneath the vehicle to reduce the drag coefficient and lift.