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Lightweight Valve Closes Duct QuicklyExpanding balloon serves as lightweight emergency valve to close wide duct. Uninflated balloon stored in housing of duct. Pad resting on burst diaphragm protects balloon from hot gases in duct. Once control system triggers valve, balloon inflates rapidly to block duct. Weighs much less than does conventional butterfly, hot-gas, or poppet valve capable of closing duct of equal diameter.
Document ID
19910000663
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Fournier, Walter L.
(United Technologies Corp.)
Burgy, N. Frank
(United Technologies Corp.)
Date Acquired
August 14, 2013
Publication Date
December 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 12
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
MFS-28511
Accession Number
91B10663
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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