In Project Collisions, I am creating a system to deliver fruits by drones. The drone will release the package from a height up to 10 meters and my job as an engineer is to develop a solution so that the package is protected in its fall.
For Drop 0, a package with the dimensions of 20*20*30 was dropped from a height of 5 meters. Below is a photograph of the package:
The package will hold apple, blueberries, strawberry, and tangerine Inside, items are organized like this:
The purpose of Drop 0 is to get baseline data about our package. The group developed a testing procedure so that we can be consistent on how data is collected throughout the design cycle.
During the drops, I noticed that strawberries and blueberries are very fragile, and it could be mushed up pretty easily-. The following data was collected:
The average time it took for our package to fall the 5 meters was 10 seconds. Using LoggerPro, we plotted out the fall of the package.
I dropped the box from 5m higher than the force plate, it was bit slow in the beginning, and then the velocity increased a lot. However, the package didn’t hit the force plate perfectly it was off by about 40~50cm right
A force plate at the bottom of the drop was used to collect data on the impact force of the package. Our group didn’t hit the force plate, and it was off by about 40~50cm. As a project metric for accuracy, we want our project to safely deliver the product without damaging the fruits.
The average force on impact was 0 because the package didn’t hit the force plate. As a project metric, our group has decided to work on accuracy, because the package didn’t hit the target well.
Summary: Project Metrics
Our team has decided that the three most important criteria to design towards are the quality of fruit, accuracy, and soft landing. Below, each metric is described, and the goals were determined by data from Drop 0.
- Quality of fruit, strawberries, and blueberries was squashed they had water seeping out, our goal is to have the fruits intact.
- Accuracy, the package didn’t hit the force plate, our goal is to make sure that the package hits the force plate.
- Soft landing, our goal is to make sure that the package to land softly to have the fruits intact.
Our group is now building the first prototype. I hope that we can have all the fruits intact.