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
Hot air ballooning in Luxor Hot air ballooning in Luxor Hot air ballooning in Luxor is an aspect of the Egyptian tourist industry, tour companies offer rides in hot air balloons to tourists who enjoy magnificent views of ancient Thebes, the temple complexes of Karnak and Luxor, the Valley of the Kings and the Valley of the Queens. A series of hot air balloon accidents have called the industry's safety record into question. Companies began offering hot air balloon rides to tourists in Luxor in the early 1990s. The balloon rides are an important part of Egypt's tourism industry. Following a 2009 crash, balloon flights