NASA NTRS · 19920000369
Improved Helium-Barrier Bag
Abstract
Specially designed bag maintains helium atmosphere around large, low-temperature duct. Easy to install, durable, and reusable. Intended to prevent cryopumping occurring if air or nitrogen allowed to make contact with cold surface of duct.
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Viger, Brent J., Logan, Robert F., Fink, Jeffrey E.. 1992-06-01. Improved Helium-Barrier Bag. https://ntrs.nasa.gov/citations/19920000369
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