Hot air balloon sea level, and humidity of the air surrounding. On a warm day, a balloon cannot lift as much as on a cool day, because the temperature required for launch will exceed the maximum sustainable for nylon envelope fabric. Also, in the lower atmosphere, the lift provided by a hot air balloon decreases about 3% for each 1,000 meters (1% per 1,000 ft) of altitude gained. Standard hot air balloons are known as Montgolfier balloons and rely solely on the buoyancy of hot air provided by the burner and contained by the envelope. This style of balloon was developed by the
Philippine International Hot Air Balloon Fiesta ultra-light flying formation and flour bomb dropping, kite-making and choreographed kite-flying, hi-start launch gliding, control-line aircraft flying, pylon racing, banner towing, aero-modeling symposium and races between ultra lights and motorcycles. An estimated 100,000 visitors locally and from around the world come in to see this event. In 1994, three years after the devastating effects of the Mount Pinatubo eruption, Tourism Secretary Mina Gabor, together with Korean businessman and hot-air balloon pilot, Mr. Sung Kee Paik, and British Airways General Manager, Mr. John Emery, and the German aviation enthusiast Max Motschmann engineered the first ever Philippine International Hot Air Balloon Fiesta