Project Collisions is all about drones. And that means necessary testing so that our idea will work! We’re dropping from 10 meters, a box filled with candy, dubbed “The Mystery Box of Candy.” It might break, so we have to protect it! with our lives. The box we dropped today is 15 cm x 18 cm x 6 cm. It’s pretty small, but a lot of our consumers want different sizes, and of course, a huge box with candy is not at all healthy. It’s a white cardboard box with candy inside.
we didn’t put these sweets in… but you get the point
Apparently, I was the only one that brought candy, but it was chocolate, haha. Since we didn’t have other candies, we weighed it down with erasers and other items that resemble the weight of the candy.
Drop 0 is supposed to be kind of a control test to figure out what is successful and what’s not and how we need to protect our package in a sense. Say, maybe one of the packages breaks, so we realize we need to use stronger packages. Because of this, we are only dropping 5 meters. We also made a procedure so each time the way we drop doesn’t change.
At the drop, I noticed a lot of things. It fell at an average of 2 seconds and completely missed the force plate, our target both times. Coincidence or not? Anyways it was falling sort of quickly and bounced, which may have shaken the contents. We would like it to drop slower or be stronger to withstand the force of impact.
This is our logger pro graph after reviewing the footage. The blue dots are the meters it is getting closer to the reference point, while the red dots are the speed of meters/second. The blue dots were at the distance of 5 (this drop) and it curves downward, as it falls more distance between each frame. In the end, it’s nearly at 0 but it is around -1 as the box bounces off of the target. The red dots show that its speed is relatively below 0, which means that it must have not moved as fast as a meter per second. At the center, it goes above 0, and that must be at the very end of the free fall, as it began to pick up speed
We would like to improve our drop, and we can improve it in several ways. One of the most important factors we need is to be accurate. Both times, we missed sorely, being so far from the goal we didn’t have a force measuring. We would like our packages to be accurate, landing where preferred, so it hopefully won’t end up at someone else’s house, in the garden, on the balcony, etc. Also, another metric is a soft landing. The more time it takes to fall means the slower it would fall, so we think it would be nice to have it drift slowly down, or at least not with sudden impact. It also bounced, so that might’ve damaged the package, so we want a stabler landing. Anothe metric would be the velocity, as we want it to go down slower, or at a slower rate of meters to second.
I hope that we can drastically slow down the way it falls and make it more accurate so it wouldn’t bang as hard into the ground.