Co2 Car

Define a Problem

Build the fastest Co2 a car

Brainstorming

Researching and Generating Ideas

In 1997, the Thrust SSC land speed vehicle reached a speed of 766 mph. This is faster than the speed of sound. This first land vehicle to break the sound barrier was 696 mph faster than a Cheetah! Vehicles designed to break the land speed record are not your typical cars. The vehicle was shaped like a fighter jet and was powered by two turbojet engines. Top fuel dragsters, the top land speed vehicles with internal combustion engines, have reached speeds of 336 mph in ΒΌ mile. Going from 0 mph to 336 mph in such a short distance would surely be an exciting ride. The most common power plant used in land transportation vehicles is the internal combustion engine. Internal combustion engines are used in the cars and trucks we use every day. These engines use a controlled explosion to create power. A four-stroke engine uses a piston and cylinder to draw fuel and air into the cylinder on its down or intake stroke. On the upstroke the air fuel mixture is compressed. At the top of this stroke, a spark ignites the fuel causing an explosion that forces the piston down, power stroke. When the piston comes back up the exhaust from the explosion is released. Hence the four strokes: 1) Intake, 2) Compression, 3)Power, and 4) Exhaust. Making land vehicles that are better and faster is a challenge to engineers and technicians. Throughout history people have accepted challenges to improve products. Innovation and invention is driven by the desire to improve existing technologies. As land speed record teams and top fuel dragster teams push the state-of-the-art, new technologies are developed that improve our land transportation systems. Turbojet engines are used to power land speed record vehicles. Jet engines create force or thrust by heating air that quickly expands and escapes from a nozzle. The process involves: Air enters the inlet and a compressor is used to increase the pressure and temperature of the air; In the combustion chamber, fuel is sprayed into the compressed air and burned. The heat generated from the burning fuel expands the air; This expanding air moves past the turbine that powers the compressor; final.

Exhaust nozzle accelerates the air resulting in thrust. Mass is related to the weight of the vehicle. Mass is a measure of the amount of matter or material an object contains. Weight takes into account the gravitational pull on matter. Your car would weigh less on the moon but the mass would be the same. Since all races occur on earth, the difference between mass and weight factors out. If your car weighs less than your classmate's car, it has less mass.

N.p., n.d. Web. <http://front.whiteboxlearning.com/sessions/50d92a1d8e4afe8/index.html>.

Criteria and Constraints

Exploring Possibilities

To make my car faster, the main idea was to make it lighter. To do this I had to shorten the car length and make it skinnier in the middle. One of the other main things I had to fix was the drag. To fix this I had to make the front of the car slanted more so the wind will not slow it down.

Select an Approach

Developing a Design Proposal

Testing and Evaluating the Design

Refining the Design

To refine my design I had to keep making adjustments to the body to make it smaller so it would weigh less. I also had to make adjustments to the front to make the drag less. It is very difficult to make these adjustments without exceeding the specifications.

Creating or making it

If I had to make any other adjustments to it, I would make the car look more appealing. If I was going to mass produce this product I would have to make the car as light as possible with it still being appealing to a customer.

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