aaron

Dogs look up to us, cats look down at us, but pigs treat us as equals

Drop 1: The First Drop

Today, our group launched our initial design drop. Our final design was a standard 30x20x20 rectangular cardboard that was attached to a parachute.

On the left is an image of Russel doing the first of 3 tests for Drop 1 (my head is sticking on the bottom left corner of the image).  We were aiming for a smooth drop similar to when we were doing the free falling tests of Drop 0. I was hoping that there would be minimal but at least a bit of progress (similar to what our entire group imagined.

The test turned out way different then what our entire group imagined. The box seemed to go faster than the free fall, meaning our parachute did extremely minimal to no effect. The parachute opened in this image (only 1 out of 3 drops had the parachute opened), but not entirely – later we found that the parachute started to have holes. I think this is because the box’s weight was not matched by the parachute’s thickness or size, making the parachute rip, fold back in or not expand at all. The parachute (as our group discussed) was probably not thick or large enough to withstand the box’s gravitational force.  Furthermore, our data on the force of the drop was surprisingly low, which was confusing because it went a faster speed than our free fall drop yet the contents were completely okay and the force was reduced by at least 50%. Most likely the force plate got a bad reading, but the parachute may have slowed it down – we are yet to find out.

Despite the failures, I think a success was that the contents were fine. When we did our Drop 0 tests, we crushed 5 juice boxes (4 for drop 1/2, 1 for drop 3 and the last one survived for the initial drop), soaked a cardboard box, annihilated another and semi-soaked our cardboard net padding. No juice boxes were crushed in any of the 3 drops we completed, so having all but a tiny dent in the corner of our package is a huge success in my opinion.

In the future, we plan to enlarge the size of the parachute and the thickness of the plastic. Rather than using the thin plastic we found in the Nexus, our group plans to use the garbage bags that the Aiyis use around the school. Also, after having a short talk with Mr. T, we also will create a shape at the rim of the parachute to ensure that the parachute stays and will open, thus allowing our box to slowly descent.

Drop 0

On January 15th, we did our first drop. We did a free fall test with our package and contents without any aid of extra items. The goal was the package to smack on the pressure plate in the centre to collect data on the 5 meter drop. Drop 0 was a baseline drop to record what would happen to the package without anything.

Our package was a care package for the purposes of disaster relief. Inside our package contains two waters and a first aid kit. the items are organised by placing the items at the top and inserting the cardboard net at the bottom of the package. The package itself was 30 x 20 x 20 cm and the weight is 3.4 kg.

 

During the drop, I thought the drop was going to be unsuccessful. I thought that I would miss the pressure plate by a meter at least.

In the end, the drop was a success. Our data shows that the drop was 464 newtons, it took about 2 seconds to fall, and it traveled at the speed of 2.5 m/s whilst hitting the target at bulls eye.

Our team will continue to decide to add a parachute for later. We hope to see improvements for the coconut waters were almost destroyed in the initial drop.

 

 

Egg Drop

On January 7th, we did an egg drop to start off our Project collisions. The design challenge was to use a certain amount of certain materials to craft a design that when dropped will be able to stop an egg from cracking. We were given a list of hypothetically priced items and we had a limit of 600 RMB (hypothetically) to spend.

My first design was a parachuted capsule that was able to hold the egg in place. The capsule was a pyramid shaped box and the egg was wrapped in paper and cotton. The egg wrapped in the A4 paper was then tied to the tip of the capsule so that there would be enough space so that the egg would never have to touch the ground. I used a newspaper for the parachute and had the strings on either end attached by sliding paper clips hooked onto all 4 corners. A rubber band was used to tie up the design.

Then, when working with our group, we got together and concluded the materials and parts of designs we had in common. We combined them as best as possible (though the final design was essentially a parachuted pyramid capsule). we concluded that idea was best because it included a parachute (which all of us had in our individual groups) and it was best fit to take in the force of the collision.

The Egg drop was a very nervous thing. Our group’s prototype parachutes broke apart, and we were in a rush. The results were quite shocking – the egg was the first egg to be dropped and succeeded. No cracks were in it, so our group thought that our egg drop was successful.

Next time, I would maybe attempt to find a way to stabilise the parachute and thus have the capsule hit the target and not slide off.

Project Collisions is using the idea of drone delivery. During my research I found out that most of the drone-delivered items are boxes that are either landed by drones or dropped by them. A topic that interested me was the fact that in Africa there is a glider drone that delivers packed blood to villages that are in desperate need of them.

I hope to learn more about collisions and how package design is a key factor in the drone delivery process.

Future House Project Highlight

Out of all the things we did, my favourite part in the TinkerCad house project was the building process on the TinkerCad website. The website at first seemed very advanced and hard to use (with all the icons and buttons you could choose), but afterwards it seemed quite easy to building and create. The fun part about TinkerCad was that we could collaborate together by creating something and sharing the file. Because of that, the TinkerCad building part was my favourite part of the Future House project

The Road to Peace

Ahmed believed that if he was loyal, he would be out of harm. He thought that if he strived to do well, he would live happily. But that was 20 years after the pacific refugee crisis. Things have changed. His father was taken away, and his mother followed short after. People were after them. They’ve been arresting refugees since – their families counted as well. It was a matter of time before he had to choose – to leave for good or to stay for the worse.  Canada would be there for him to escape – or was it….

Aaron Hou Scifi Final Draft

 

This is our fly-over of our TinkerCad habitat.

the white model is our first print and the orange one is our final.

What? So what? Now what?

A problem that we face in our world today is that will increase with a growing population is refugees. As the population increasing, the amount of refugees in war-torn areas increase. For example, according to the American Holocaust encyclopaedia, there were over 340,000 jewish refugees from Germany and Austria during the second world war. Today, there are 5 million refugees from Syria alone. These numbers are increasing because of the amount of people that are living in each country.

This is important because refugees can be hard on countries. When you have refugees, you are responsible for their basic amenities; health, etc. – all of those whilst providing for your own country. Often, the annual budget for a countries citizens are huge, and government would need to allocate more money depending on the amount of refugees they receive.

Future House project

Attached above is Sally and my initial floor plan design. In my design (the one on the left), I incorporated questions, labels and feedback both peer and personal. The one thing I found out about our floor plans is that we both came up with a square frame.

 

In the end, we decided to come up with this design. A long corridor shaped building with a hexagon in the centre. Using the scale 1m : 20cm, the length of our final design is 200mm with a width of 44.42mm; making our design 10m at length and 2.22m at width.

This design, already way below the maximum of 25m(squared), is 22.2m(squared) and is even lower because the hexagon leaves extra space.

 

Attached above is a table that outlines the key features of our fictional habitat and where it is incorporated in this final design. The long corridor like base/frame is what is key to me because in my story, it talks about how the main character gets arrested in a long, corridor like room.

As a collaborator, my role is to be able to incorporate my own ideas as well as Sally’s into our final design. This way, we get an equal say in what the final design would be like.

Cells: Blog post

  

Attached to the left is a scanned image of my model. My thinking over time has changed due to the modelling and the evidence I have collected.

The Mass in an egg decreases and increases depending on the liquid that it is placed in. The 2 liquids we tested with were Corn Syrup and water.

Water molecules – as shown in the model – are the same size as Corn Syrup molecules. The difference between them is that the Corn Syrup molecules are bunched up, whilst the water molecules are more spread out. the egg shell only lets certain things in and out.

Thus, because the water molecules could easily pass through the egg, the egg placed in water gained more mass than the one in Corn Syrup.

This is similar to a cell and it’s structure and function. The cell membrane acts like the egg membrane; it keeps certain things from coming in and out. Only certain molecules are able to enter the cell – others are not.

 

November Field Study – data collection

Today, the date is 20th November, 2018. We went on a excursion to the Wenyu river to collect data on dissolved oxygen and the temperature.

We went to our first data site when we realised they fenced it off. We decided to collect data on site 2. After we collected data from the second data site, we created a temporary third data site.

Our data came out very different from what we expected. According to the data table, we expected the amount of dissolved oxygen to decrease if the water temperature decreased. Despite the fact that the water temperature did decrease, the amount dissolved oxygen grew.

The change in dissolved oxygen wasn’t drastic, but it changed by 4 mg/L. I believe that in January, the amount of dissolved oxygen will continue to increase as January will be colder than November.

 

developing icons

My initial sketch was a timeline with icons sticking out of it. As much as my peers like the idea, my friends and I questioned the practicality of the timeline that I originally created. We wondered whether it would turn out clear or not. So I stuck to another timeline idea and decided to go with it.

Rather than having a straight line with icons sprouting from only 1 side, I decided to do a design that kind of looks like rose thorns – sprouting from each side. 

This is my colour coded explanation. It shows the icons I used and what they represent.

 

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