This assignment was not very enjoyable for me because though I understood the concept, I did not really understand how to apply it to this case. I am really disappointed in myself, because on one of the pages, the division symbol looked a ton like an addition symbol, and I was not really thinking, or using my background knowledge, so I used addition instead, and got all of the problems in that section wrong, which led to me getting an approaching on this assignment. Other than that, I was still pretty confused on the rest of the assignment, but I tried my best, in the end though, I am not proud of this assignment.

In this lab, we demonstrated energy transfer, the different types of forces, and how to protect an egg while keeping the actual science behind it in mind. I feel like my group did well with this concept. I worked with Jyles and Olivia and we designed a pretty well thought out structure that kept our egg safe until the end. Ours was the lightest design, so as science goes, and common sense, ours went the slowest of all, leading it to have a reduced impact force.

For this lab, we built film canister rockets out of paper, tape, and lots of trial and error. Then we attached a film canister to the bottom of the rocket and filled it with a small amount of water before placing half of an alka seltzer tablet inside. The goal was for the lid to pop off once the chemical reaction had happened, but our lid wasn't working very well, so the water just seeped out, and all three times we tried this, it didn't move. This was the case with many others. I got a meets on this lab because I completed all of the questions correctly and efficiently, but my reflection could have been more thoughtful. 

Our second test launch was not the most successful. All of the things that we decided to change about our first design were done, but at a very excessive rate. We wanted to make the fins bigger and heavier, and we did, but they were too heavy. We added more water, but then we added too much water and it didn't leave the ground. So while the water was draining out, we picked it up and launched it with the water left in it, which was slightly more than the first launch still! When we launched it this time, it left the ground, but only made it about 6-7 feet in the air, and without almost any velocity. This was most likely due to the fact that we lost the cork that we used the first launch, and used one that did not fit tightly, so it did not launch with as much velocity. Now we have many more corks, which all fit tightly, and we are going to redo the straws, make new fins, add a nose cone, and use the same egg-protecting system that we used last launch. We are going to use a thinner material for the fins, (a Digiorno pizza box) because while observing Miles and Maya's last launch, we realized how well lighter and thinner fins work. (Theirs went the highest)

This was our last launch before exhibition, and it was pretty successful. I think that we have come a long way from where we started with our design, which was not aerodynamic in the least, because this one looks sharp and fast enough to hurt someone. This launch was pretty good, it went higher than the other ones, straighter than the others ones, and it was the first rocket that DIDN'T  break our egg! I am pretty sure it was mostly because of the nose cone though. The rest of the designs didn't really stand on their own, and if they did, it was because the fins were super reinforced with strong materials that also weight a ton, but this one did! And it weighs very little, even with the egg in it! We also figured out that 200-250 ml of water is the perfect amount for our rocket, since we have a smaller rocket. We are not changing anything about this design for exhibition, because it worked better than the rest! The only thing we are doing, is replacing all the straws, nose cone, fins, EVERYTHING, so that it is fresh and ready to fly on the 9th!

During this unit, I learned a ton about how Newton's three laws work along with the four forces that greatly impact a rockets aerodynamics, flight stability, and overall good performance. I also learned how to successfully use the iteration design process to build and improve our rocket to bring it to its full capacity. I got an exceeds on this project firstly, because our rocket went fairly high, and protected the egg, I did very well on the rocket manual, my speech at the actual exhibition was high quality, and I delivered it professionally, and lastly, I contributed a ton to my group individually, while maintaining habits of heart and mind the whole time.