Léghólyag

Léghólyag, also known as a hot air balloon, is a type of aircraft that uses heated air to generate lift. It consists of a fabric envelope that holds heated air, and a basket or gondola suspended beneath it. The envelope is typically made of nylon or other lightweight, durable materials, and is open at the bottom to allow the heated air to escape. The basket or gondola is attached to the envelope by ropes or cables, and can be used to carry passengers or cargo.

The principle behind a hot air balloon is based on the concept of buoyancy. As the air inside the envelope is heated, it becomes less dense than the surrounding air, causing the balloon to rise. The pilot controls the altitude of the balloon by adjusting the temperature of the air inside the envelope. To descend, the pilot allows the air to cool and become denser than the surrounding air.

Hot air balloons are typically launched from a flat, open area, such as a field or a beach. The pilot and passengers board the basket or gondola, and the balloon is inflated with cold air. Once the envelope is fully inflated, the pilot ignites a burner located at the bottom of the envelope, heating the air inside. As the air heats up, the balloon rises, and the pilot can then steer the balloon using the wind and the burner.

Hot air balloons are popular for recreational use, as they offer a unique and peaceful way to experience the world from above. They are also used for scientific research, such as atmospheric studies, and for advertising and promotional purposes.