The sails of the air: the heart of the hot air balloon

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Materials, shapes and envelope secrets

The “sails” of hot air balloons, known as envelopes, are made of lightweight and resistant fabrics such as nylon or ripstop polyester. Designed to withstand high temperatures and keep warm air inside, they feature reinforced seams and colored panels that not only add aesthetics, but also structural stability. Their shape optimizes buoyancy and flight control.

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The sails of the air: the heart of the hot air balloon 2

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Picture of Joan Viñas

Joan Viñas

Pilot with international projection and experience in tourist flights, exhibitions and expeditions in complex environments.

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