Embedded Files
Objective:
Objective:
The objective of this project was to create a model capable of protecting an egg crashing into a wall at 5 m/s down an inclined plane. The model had to contain areas that acted as a seatbelt, crumple zone, and airbag. These areas had to function as if they were part of a car to protect the egg on impact with the wall. In theory, the crumple zone was meant to absorb the impact of the cart when it hit the wall while the seatbelt held the egg in place. The “airbag” would then act as extra cushioning for the egg. The seat belt had to be detachable from the cart and couldn’t be secured using an adhesive. The model also needed to temporarily attach to the cart allowing it to easily come on and off. In order for the model to pass it has to protect the egg 4 out of 5 times during the final testing period. This project acts as a useful way of applying different physics concepts in an assignment. For this assignment there was a limit on the material we could use. We were given a max amount of money we could se to buy materials which was $8.00.
This was a virtual sketch of what the Newton test was supposed to look like.Taken by T. BrayJanuary 2023
The Car Measurements
The Car Measurements
This image shows the measurements of the car we had to create a prototype for. Created by T. Bray and M. RaffenspergerNovember 2022
Original Sketch:
Original Sketch:
When creating the original design of our model, we focused a lot on the crumple zone as we felt that played an immense role in the success of our egg cart. We picked a design that would bend and put itself back into place. Our design’s crumple zone would compact on impact and spring back into place. In theory, it would absorb most of the force the cart got on impact, essentially protecting the egg. We felt the seat belt wasn’t as important, so we only allotted one popsicle stick to hold the egg in place and the airbag was a good amount of polyfill that was placed around the egg in the basket of the car. All of the cardboard materials were hot glued together because the hot glue was a free adhesive that we were given.
This was the original color-coded sketch for our cart design.Created by M. RaffenspergerNovember 2022
Prototype
Prototype
This picture shows the first design in which we created based upon our first sketch. Created by T. Bray and M. RaffenspergerNovember 2022
Testing the Prototype
Testing the Prototype
Copy of Newton Car Model Test.mp4This is the video of our first test of our prototype. This allowed us to determine how to fix the design so that when putting an actual egg into the design it wouldn't break. Taken by T. BrayNovember 2022
Final Sketch
Final Sketch
Our final sketch was developed because we found that we could make the design more compact and still receive the same effects. With this smaller design it used less cardboard making it more money efficient. Also, we decided to add more stuffing in-between the cardboard of the crumple zone. Another change we decided to make was adding more inforcement above the egg while it was in its seat. Finally, rather than putting popsicle sticks on the side of the cart to hold the model in place, we put a rubber band on the bottom which would allow it to actully fit ontop of the cart.
Copy of Newton Cart Final Sketch.pdfThis was the final sketch of our design. It was color-coded to easier differentiate between the different parts of the model. Created by M. RaffenspergerNovember 2022
This was the design of our hat. The hat was meant to resemble a top hat. Created by T. BrayJanuary 2023
Inventor
Inventor
Part of this project was to create an additional Inventor model that could add as a design aspect to the egg cart. This was meant to help enhance our Inventor skills. This aspect of the cart didn't have any practical use but was for the desing aspect. The item we choose to create was a mini hat to add to the top of our cart so our egg could "ride in style."
Final Model
Final Model
The size between the prototype and the final model is vassly different. This model is much more compact and smaller. It also utilized more of the cotton filling as cushion to for the cart. We kept the overall inspiration for the rumple zone but descred the area it spanded making it more cost effective.
This was a side view of the model Taken by M. RaffenspergerNovember 2022
This is a front view of the model. Taken by M. RaffenspergerNovember 2022
Final Test and Results
Final Test and Results
With our final model, the egg was safe with all the test we conducted. We conducted a total of 4 trials. The speed of all the trials were as followed:
6.48 m/s
6.35 m/s
8.97 m/s
6.49 m/s
The end result was success for our design.
Engineering Notebook
Engineering Notebook
To document the process of creating our cart, we made a engineering notebook. This notebook was a series of multiple entries from the beginning to end of the project. It worked as a good way to document our successes and failures during the models creation. It allowed for us to make a better final design and model as we could look back at our failures.
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