CO2 dragster

CO2 dragster


Rear view of a "rail"-style dragster, with external wheels. The hollow container for the carbon dioxide cartridge can be seen towards the rear of the car.

CO2 dragsters are miniature racing cars which are rocket-powered by a carbon dioxide cartridge, pierced to start the release of the gas, and which race on a typically 65 foot track. They are frequently used to demonstrate mechanical principles such as mass, force, acceleration, or aerodynamics . Two hooks (eyelets or screw eyes) linked to a string (usually monofilament fishing line)at the bottom of the car prevent the vehicle from losing control during launch. In a race, a laser scanner records the speed of the car at the end of its run. Often, the dragster is carved out of balsa wood because of its light weight.[1][2]

CO2 cars are a part of engineering curriculae in diverse parts of the world such as New Zealand[1] and the United States[2]. In the United States, classroom projects and competitions can operate under the aegis of the Technology Student Association at middle school and high school levels.[3][4] Competitions can be featured in local newspapers.[5]. Students learn about the forces of gravity, drag, wind resistance, and the motion of air as a fluid. The projects mainly test the aerodynamic, mass and friction properties of a car.

An unfinished "shell" dragster, with wheels enclosed within its body

See also

References


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