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The thing was to be 50 feet in diameter, carry a lot of equipment, but must be light enough to be carried by a Bell 314 big-lift Helicopter. So I made an outer ring of welded aluminum truss sections all pulled together by cables to a center triangular frame. This was inspired by the extremely light construction of the 1930's Hindenburg Zeppelin. The saucer looked like a slice out of the Hindenburg turned sideways.