Hot air balloons and things you need to know

Hot air balloons were born with the desire to learn and explore space like free birds in the sky. Ideas of this type attracted the interest and research of scientists in the 1700s.

1. About the concept

Hot air balloons are an innovative flying solution. In it, put a large bag of hot air or gases that are lighter in mass than regular air. From there, a thrust is created according to Archimedes' Archimedes principle, allowing that large bag to fly into the sky.

2. About structure

The hot air balloon looks quite simple from the outside, but needs to ensure high safety. So what is the normal structure of a hot air balloon and what material is it made of? The hot air balloon is composed of 5 main parts: 

Bark:This is the outside part of the balloon, made of lightweight material such as nylon or polyester. The shell has the ability to contain air inside and ensure the airtightness of the balloon.

Air bag:The part that contains hot air to create force to push the balloon up. It should be made of a heat-resistant material such as silicon or polyurethane. 

Fuel combustion system:This is the part that helps create high temperatures to heat the air inside the bag. Through the burning of fuels such as propane or butane, the heat produced increases the temperature of the air, causing the bag containing the air to become lighter and levitate.

Basket or hanging frame:This is the part that carries people and goods in the balloon. Usually made from bamboo or other lightweight materials such as aluminum. The basket is attached to the balloon's shell and provides space for passengers and equipment.

Controller and safety:Includes parts such as gas tanks, temperature control valves, and air release valves pumped into the balloon. And other safety devices to ensure the safe operation and control of the balloon.

Overall, the components of a hot air balloon include the outer shell, air bag, fuel combustion system, basket or suspension frame, and control and safety components. All of these hot air balloon features work together to produce the balloon's rise and flight.

3. Regarding operating principles

More precisely about the principle of operation of Archimedes's hot air balloon it can be said: "The buoyancy of an object in a liquid or gas is determined by a lifting force equal in magnitude to the weight of the liquid or gas that the object holds. This body takes up space.

To put it more simply: burn the air inside the hot air balloon to heat it, making it lighter than the normal cold air outside. From there, the large bag will float to the top, dragging the woven basket carrying goods/people below. 

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