Ключевые слова: aigenerated, air, air circulation, altitude, altitude control, ascend, balloon, balloon fabric, basket, buoyancy, burn rate, burner, burner efficiency, burner flame, burner maintenance, burner nozzle, burner operation, burner safety, burner valve, combustion, combustion chamber, envelope, envelope shape, expand, flame, flame control, flight, fuel, gas, heat, heat source, heating air, hot air, hot air balloon, ignition, inflate, journey, pilot, propane, rise, temperature, wind direction,