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 Philippine International Hot Air Balloon Fiesta The Philippine International Hot Air Balloon Fiesta is an annual event that occurs between January and February in Clark Freeport Zone, Angeles City, Pampanga. It features multicolored hot air balloons with more than a hundred balloon pilots from around the world. This four-day hot air balloon event is the biggest and longest-running aviation sports event in the Philippines. The festival also features a number of events in skydiving, flag jumps, micro light and rocketry demonstrations, small plane fly-bys and fly-ins, remote-control airplane and helicopter flying exhibitions, freestyle aerobatics, precision maneuvers, light airplane balloon bursting,