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TOPIC: Ion engine

Blobrana

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Posts: 131433

Date: Apr 17 16:23 2008

Ion engine	Permalink

Ion engine enters space race Engineer Neil Wallace peers into a huge vacuum chamber designed to replicate - as far as possible - the conditions of space. Cryogenic pumps can be heard in the background, whistling away like tiny steam engines. Using helium gas as a coolant, they can bring the temperature in the vacuum chamber down to an incredibly chilly 20 Kelvin (-253C). The pressure, meanwhile, can drop to a millionth of an atmosphere. Read more __________________

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