HOT AIR BALLOON (INDIVIDUAL ASSIGNMENT)

I spent the first week learning more about the principles of making a hot air balloon by researching the history of the hot air balloon. I go over the directions for the individual task, which calls for applying my understanding of gas law to construct a mini hot air balloon. The balloon's basket weight must not be less than 5 grams in order for it to remain afloat. As a result, I looked up some basic designs to construct this hot air balloon. The balloon envelope, basket, frame, and heat source are some of these ideas. Trash bags, mylar film, and tissue paper are examples of thin, lightweight materials that I would suggest using for balloon envelopes. My preference for heat sources was tea lights and birthday candles. The basket can be made with thin balsa wood and aluminium foil. The frame can then be constructed using wire or thin bamboo sticks.

In the second week, I learned about the gas principles underlying hot air balloons. Charles' law turns out to be the main factor. It asserts that a gas's volume is directly related to its temperature for a given gas volume and constant pressure. It also says that the air within the balloon expands due to Charles' law. After that, I researched the hot air balloon's buoyancy and density. Additionally, I learn about the Archimedes principle, which is responsible for the hot air balloon's ascent. Thus, I have decided to create the hot air balloon using the Charles law hypothesis.

I concentrated on the essential parts and working mechanism of a hot air balloon during the third week. The three most important parts of a hot air balloon, in my opinion, are the burner, the envelope, and the basket. The actual balloon that contains the air is the envelope. The object that warms the air inside the envelope is called a burner. The basket that houses the pilot and passengers. After that, I made my first attempt at creating a hot air balloon using an aluminium foil basket, a thin plastic bag for the envelope, birthday candles for the heat source, and plastic straws for the frame.

I attempted to fly the hot air balloon I created last week this week. Sadly, the attempt was not successful. This occurs as a result of insufficient heat from the heat source to raise the hot air balloon. That explains why the hot air balloon is just moving on the surface in the video.

This week, I attempted to make and fly a hot air balloon for the second time, using sanitizer on cotton pads instead of birthday candles as the heat source. Both the frame and the balloon envelope stayed the same. Since the sanitizer is highly flammable, it can heat the air within the balloon and cause the hot air balloon to rise, which is why the heat source needs to be changed. Despite this, the attempt to launch the hot air balloon was unsuccessful once more after switching the heat source. The weight of the plastic bag, which is not supported by the fuel, may be the cause of the hot air balloon's inability to take off. I used a larger plastic bag this time. The hot air balloon did not move upward to fly; it simply inflated due to the heat.

I made my third effort at creating a hot air balloon this week. I used paper cups for the basket, sanitizer on cotton pads for fuel, and some poles for the frame. The thin, lightweight nature of the kite papers is the primary justification for using them as the envelope. A hot air balloon must be lighter than the air it is displacing in order to function. The balloon will be easily lifted by the hot air inside since kite paper is so thin and light.

I attempted to fly a hot air balloon for the third time this week, but I was unsuccessful once more. This is because the hot air balloon's basement is wider. To create enough lift, a broader base requires a larger volume to be filled with hot air. The balloon won't provide enough lift if the burner system isn't able to heat up more air effectively. My video shows you what happens as the hot air balloon keeps descending. My father and brother assisted me in launching the hot air balloon when I was at home at the time.

I made and flew a hot air balloon for the fourth time this week, using kite paper for the envelope, a stick for the frame, and melted candles for fuel. This time, I made a circular base to reduce the size of the hot air balloon's basement. I represented the passengers with five grams of rubber bands inside a paper cup that I used as the basket. Thus, I had a successful hot air balloon flight on this attempt. My footage shows that the hot air balloon was in the air for around twenty seconds. Since I was doing this at college, my friend assisted me in taking off.

In conclusion, I described the energy factors that enabled my hot air balloon to fly effectively. Initially, I discussed fuel combustion, which occurs when fuel burns in a burner to release chemical energy held in fuel bonds. Next comes the heat transfer process, which is the process by which the chemical energy in the flame is transformed into thermal energy. Following that, there is an increase in internal energy and a shift in density. I also went into detail regarding the hot air balloon's buoyancy force and lift generation.