Psion II interesting programs for Hot Air Ballooning! The suite of programs automatically calculates hot air balloon lift. Calculations for Total Permitted Lift and Available Lift. Also allows for input of Technical Log and Passenger Manifest. Customisable ballon parameters for size, weight and number & type of fuel cylinders. Selectable inputs for altitude (0 to 30,000ft), envelope temperature and pilot & passenger weights. Switchable units of measurement and data entry e.g. lbs/stones + lbs/kg
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