We recently got foam discs for spin up. After some testing, it became apparent that these are not frisbees. They are symmetrical discs, which seem to generate zero lift when tossed through the air. We came to this conclusion through a few tests as well as some research. We compared different throw…

My team here are calling them pizzas.

There are 4 replies to my topic three of which are about the naming of discs [image] Golf: (They’re also not rings!) When thrown the rings and the discs act similarly. [image] 67203c: You guys are all wrong they are pancakes. The next test might involve throwing pancakes to establish…

Well I did actually mention plates in the post so you got some leeway there and it could be entreating to do an experiment on the dynamics of a plate.

[image] seenSeal: The next test might involve throwing pancakes to establish if discs resemble their motion. I would avoid syrup on pancakes you are going to throw…

This is fascinating! I have a few questions about your methods and results below. [image] seenSeal: Figure 4: underhand throw with flick of the wrist. [IMG_2850] Firstly, I’m assuming that you picked the tennis ball because it was approximately the same weight. Is this the case? Correct m…

I don’t have my computer in front of me right now, so I cannot run anymore tests with my code. However, when using @46X ’s simulation made in Khan Academy, it does not look like the aerodynamics have a large affect even at greater angles and possibly distances. The MIT papers only show the graphs lik…

[image] TheRichDarth: I’m assuming that you picked the tennis ball because it was approximately the same weight. Is this the case? The tennis ball was picked for a few reasons similarity in size as well as weight. I just looked up the weight of a tennis ball and Google says it’s about 56 gram…

So I got to playing with the discs as a frisbee during lunch today. You can throw the discs like a frisbee and they can fly very far. Now the discs don’t seem to mimic the graphs of the frisbee(go up with lift) but they seem to fly further than what would be expected with a parabolic trajectory. My…

The reason the disc is falling slower, and therefore flying further, would be because of the angle of attack that develops as the heading of the velocity vector changes, and causes lift. It is important to note that spinning the frisbee provides it gyroscopic stability, it is not what is directly i…