Figure 57: Hot Air Balloon Performance Graph

-20° -10° 0° 10° 20° 30° 40° 50° 60° 70 °80° 90° 100° 110° 120° 1600 1400 1200 1000 800 600 400 200 0 15,000 feet 10,000 feet 5,000 feet Sea-level – pressure altitude Note: Propane pressure marginal below 0°F Balloon volume = 56,400 cu ft Balloon internal temp = 250°F (Max. permissible for sustained operation Approx. empty weight = 335 lb) (with two tanks) Ambient temperature altitude (°F) Gross weight (pounds) Standard temperature Maximum gross weight limits