BALLOONING 101 — Tigard Festival of Balloons

BALLOONING 101

The 3 main parts of a Hot Air Balloon are the Basket (or gondola), the Burner system, and the Envelope. There are other parts as shown in the example above. A 'Gore' is a section of fabric running from top to bottom of the envelope. In between Gores are 'load tapes' which carry the load of the balloon. Load tapes run both vertically and horizontally around the Envelope. Many balloons have two sections of fabric near the top of the envelope called 'Turning Vents'. The Pilot may activate either of the vents to cause the balloon to spin on it’s axis. When this happens, you the passenger are treated to a panoramic view of the area you are flying over. The narrow portion of the Envelope at the bottom is called the 'Throat' or 'Mouth'. Below that is a 'skirt' or 'scoop' which protects the burner flame from wind allowing it to blow straight up into the Envelope. The entire structure is called ‘A Hot Air Balloon System’.

What weather conditions are needed for balloon activities

Lots of people show up to the Festival expecting to see hot air balloons hanging out in the fields all day. We wish it was that easy, but it unfortunately takes a bit more for a hot air balloon to fly. Morning launches are 5:45am to 6:15am, come early to avoid the rush and savor the entire morning experience. Tether rides start following the morning launches and continue for approximately 2 hours. Rides are first come first serve. The line grows fast so get in line early. Night Glow is at sunset, around 9:00pm, again come early to enjoy music and avoid traffic. Balloons do not lift off at Night Glow. It is against FAA regulations for hot air balloons to fly in the dark. All balloon activities are weather pending.

How does weather impact the balloon activities? Hot air balloons can only fly in stable air and no rain (including foreseeable rain). During the day, the sun heats the earth, which creates thermals making it unstable for balloons to fly. During tethers and Night Glow, balloons need virtually zero wind in order to keep them up safely and properly use the burner to have them tether and "glow". This is why we never know how long tethers or night glows will last. In Oregon summers, winds can be calm early in the morning and late afternoon, and then pick up mid-morning and in the evening. It is difficult to keep a giant balloon on the ground when it is made to fly. Since the envelope of the balloons are so delicate it cannot stay up in wind higher then 8-10mph. That is why balloon activities can sometimes be shorter or longer depending on the wind and weather. Our first priority is the safety of the crew, pilot, and Festival guests.

Where do the balloons fly in the morning? Balloons will follow the direction of the wind and for the Tigard Festival of Balloons that wind needs to be blowing generally south to avoid populated areas to the north. The FAA will not allow us to fly into Portland airspace. Look for the balloons over Tigard, Tualatin, Sherwood, Wilsonville, Aurora or Woodburn. Unfortunately, we can have perfect flying weather, but if the wind is blowing north our balloons cannot fly.

BALLOON FAQs