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O'Neill Cylinder (Island Three Design)
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6516 (12 in 7 days)
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"The O'Neill cylinder is a space habitat design proposed by Gerard K. O'Neill in his book The High Frontier. O'Neill was a physicist at Princeton. In 1969 he taught undergraduate physics. Dr. O'Neill decided to teach by having students design large structures in space. To the surprise of everyone, several designs appeared that used ordinary materials (steel and glass), and could provide large areas suitable for human habitation. This cooperative result was first published by O'Neill in a 1974 article in Physics Today.
O'Neill's reference design, "Island Three", consists of two counter-rotating cylinders each two miles (3 km) in radius, and twenty miles (30 km) long. Each cylinder has six equal-area stripes that run the length of the cylinder; three are windows, three are "land." Furthermore, an outer agriculture ring, 10 miles (15 km) in radius, rotates at a different speed for farming. The manufacturing block is located at the middle (behind the satellite dish part) to have minimized gravity for some manufacturing processes." (Quoted from Wikipedia.)
My second model! This one turned out a bit better than the Bernal Sphere. A bit more complex and larger, since I discovered the "follow me" and "scale" features.
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