1. Roller Coaster Designer
By Jeevan Singh Shergill

2. INTRODUCTION
I chose to do my presentation on roller coaster designers because I love roller coasters. Roller coasters can be quite dangerous but there is a low chance that an accident will happen. This is a picture of the tallest roller coaster in the world. It is called Kingda Ka.

4. Designing the Roller Coaster
Designers first sketch out hills, turns and twists.
Then designers make more accurate drawing using a computer aided design (CAD) program.
Maths is needed to calculate slopes and the height of the roller coaster.
sketch hills turns twists
make more accurate drawing CAD
Maths needed to calculate slopes + height
So car correct speed
When designing a roller coaster, the designers first sketch out the hills, twists and turns. Once they have done that they make a more accurate drawing using a computer aided design (CAD) program. Maths is needed to calculate the angle of the slopes and the height of the roller coaster so the roller coaster car goes at the correct speed.

5. Constructing the Roller Coaster
When constructing the roller coaster you have to choose material of track.
Wood will be cheaper but steel will be taller.
Then you decide to use a launch coaster or a crank coaster.
If the car is too heavy when using the launch coaster it will affect speed.
If the car is too heavy when using the crank coaster it will snap chain.
Crank Coaster
Which material wood or steel
Launch coaster or crank coaster
Launch coaster too heavy affect speed
Crank coaster too heavy chain snap
When you are constructing the roller coaster, you have to decide which material to build the track out of. The two choices are wood or steel. If you make it out of wood, it will be cheaper but your roller coaster will be taller if you make it out of steel. Once they have chosen which material to make the track out of (most likely steel), they have to decide whether to use a launch coaster or a crank coaster. The launch coaster pushes the car at the start and the crank coaster is a chain pushing the car. You usually see a crank coaster when you are going up a steep hill. If you choose the launch coaster, you car can’t be heavy otherwise it will affect the speed. If you choose the crank coaster, your car also can’t be heavy otherwise the chain might snap.

6. Loops Best roller coasters have at least one loop.
Designers usually use loop called clothoid.
If loops are too circular, the car will need a very high speed.
Maths is needed to calculate correct size of loop and ensure the car is going at the correct speed to complete the loop.
Correct speed depends on size of loop
Best roller coasters need 1 or two loops.
Designer usually use loop called clothoid
Loops that are too circular will need car very high speed
Maths needed to calculate > size of loop + calculate correct speed for car to complete loop
Correct speed depends on size of loop
All the best roller coasters have at least one or two loops. Designers usually use a loop called a clothoid. A loop that is too circular will need the car to go at a very high speed. This would mean that there will be too much G-Force to keep the passengers comfortable. Maths is needed to calculate the correct size of the loop and to make sure that the car is going at the correct speed to complete the loop. The correct speed that is needed for the car is dependent on the size of the loop.

7. Conclusion
Overall, roller coaster designers use trigonometry, geometry. calculus, angles and basic addition and subtraction. They earn between £40,000 - £95,000. If you want a job that is challenging and enjoyable, then this is the job for you.

8. THANKS FOR WATCHING