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| Home | Headlines | Cryostat Cools Spacecraft with Helium | ||||||||||||||||||||||||||||||||||||||||||||
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Cryostat Cools Spacecraft with Helium- 5/4/2009Herschel and Planck have been fuelled with hydrazine. Planck’s three-stage active cryogenic cooler, needed to keep the instruments at temperatures of 1.7K, has been filled with helium-3 and helium-4. Herschel's cryogenic tanks are also being filled with superfluid helium. At launch time, Herschel’s cryostat tank will contain approximately 2300 liters of superfluid helium-II. Read about the lengthy process of obtaining, transporting, filling and finally utilizing the cryogenic gas on SpaceDaily.com. Photo credit: ESA
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