[Mkguild] Hot air balloon story ideas

[Forgecoldiron ..]

On a whim i started searching hot air balloon info. This is what I found.

Silk Fabric (Sig) Yellow:0.33 oz. / sq.yd.

Inside the balloon it weighs only 0.067 pounds. The difference is 0.008 pounds per cubic foot. So to lift a 200 pound person, we will need 25,000 cubic feet of hot air. That's a cube 30 feet on a side, or a sphere 37 feet in diameter.

If you heat that air by 100 degrees F, it weighs about 7 grams less. Therefore, each cubic foot of air contained in a hot air balloon can lift about 7 grams. That's not much, and this is why hot air balloons are so huge -- to lift 1,000 pounds, you need about 65,000 cubic feet of hot air.

How to Calculate the Weight of Air and Model Hot Air Balloon Lift. http://www.overflite.com/thermo.html

As for material for the balloon(s), I wonder about the feasibility of using the spidersilk material that was used in the story of Yadjakali? Could this be used for balloons and or creating the basket?

For structural members, what about grown lattice beams in the way Burris molds living wood? If they need to be magically strengthened, will they remain strong in non-magic areas? In fact, will any magically enhanced item or material retain its properties in a non-magic area?

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