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Nautilus-X (Non-Atmospheric Universal Transport Intended for Lengthy United States Exploration) is a rotating wheel space station concept developed by engineers Mark Holderman and Edward Henderson of the Technology Applications Assessment Team of NASA.
In 1959, a NASA committee opined that such a space station was the next logical step after the Mercury program. [5] The Stanford torus, proposed by NASA in 1975, is an enormous version of the same concept that could harbor an entire city. [6] NASA has not attempted to build a rotating wheel space station, for several reasons.
Interior of a Stanford torus, painted by Donald E. Davis Collage of figures and tables of Stanford Torus space habitat, from Space Settlements: A Design Study book. Charles Holbrow and Richard D. Johnson, NASA, 1977. The Stanford torus is a proposed NASA design [1] for a space settlement capable of housing 10,000 to 140,000 permanent residents. [2]
An O'Neill cylinder (also called an O'Neill colony, or Island Three) is a space settlement concept proposed by American physicist Gerard K. O'Neill in his 1976 book The High Frontier: Human Colonies in Space. [1] O'Neill proposed the colonization of space for the 21st century, using materials extracted from the Moon and later from asteroids. [2]
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A Bishop Ring [1] is a type of hypothetical rotating wheel space station originally proposed in 1997 by Forrest Bishop of the Institute of Atomic-Scale Engineering. [2] The concept is a smaller scale version of the Banks Orbital , which itself is a smaller version of the Niven ring . [ 3 ]
A small reaction wheel viewed in profile A momentum/reaction wheel comprising part of a high-accuracy Conical Earth Sensor to maintain a satellite's precise attitude. A reaction wheel (RW) is an electric motor attached to a flywheel, which, when its rotation speed is changed, causes a counter-rotation proportionately through conservation of angular momentum. [1]
A McKendree cylinder is a type of hypothetical rotating space habitat originally proposed at NASA's Turning Goals into Reality conference in 2000 by NASA engineer Tom McKendree. [1] Like other space habitat designs, the cylinder would spin to produce artificial gravity by way of centrifugal force.