What did professor Sherman name his balloon?

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Professor Sherman names his balloon "The Globe." This is entirely appropriate given its projected size, as well as the nature of the journey on which he's about to embark. The professor wants to be alone on his voyage, floating high above the earth out of everyone's reach. He also wants to make sure that he stays in the air for as long as possible. This means that he's going to have to build a large balloon, with all the practical engineering problems that that entails.

But there's a precedent. The great French balloonist Giffard constructed a giant balloon of his own, the Clou, the biggest balloon ever built. This remarkable feat of aeronautical engineering consisted of no fewer than seven alternating thicknesses of rubber and silk. Professor Sherman's "Globe" has four alternating thicknesses of rubber and silk and is six thousand cubic yards in size—ten times the size of a normal balloon—making it one of the largest balloons ever made.

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