Hot air balloon diagram - how do hot air balloons work
Complete Hot Air Balloon Parachute Valve Envelope Gores Panels Skirt Parachute Valve Cord Burners Propane Tanks Wicker Basket

Anatomy of a Hot Air Balloon

Our ballooning society believes that a detailed understanding of the anatomy of hot air balloons and how they work helps to enrich your appreciation of these aircraft.


Scroll down to discover all there is to know about the different components found in a hot air balloon.

Parachute Valve

The parachute valve is located at the very top of the balloon envelope and allows the pilot to control descent.

Pilots are able to open and close this circular opening to release hot air, which enables a controlled ascent, descent and landing.

Envelope

The envelope is the section of the balloon that gives them their distinctive shape. It's effectively a fabric container where the heated air collects and consequently provides the lift for the entire balloon. It's typically made from nylon or polyester and is usually decorated with a variety of different patterns, colours, text or logos.

Gores

The gores are the individual fabric panels that are sewn together in order to create the envelope.

Panels

The term panels can be used interchangeably with gores or could refer to the smaller fabric pieces that make up the gore.

Skirt

The skirt is attached to the bottom of the envelope and helps to funnel the hot air from the burners into the envelope.

Parachute Valve Cord

The parachute valve cord is the control line that runs from the parachute valve at the top of the envelope down to the basket, allowing the pilot to open and close the parachute value as required.

Burners

The burners make up the propane-powered heating system that generates the hot air necessary for lift. Balloons usually have two burners but this depends on the size of the envelope and the load carried.

Fuel Cylinders

The fuel cyliners are tanks that store highly compressed fuel that powers the burner system.

Wicker Basket

The traditional wicker basket is not only where the pilot controls the flight and passengers enjoy the view but also contains the essential fuel cylinders/propane tanks.