Expanding 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.
Lightweight Valve Closes Duct Quickly
NASA Tech Briefs ; 15 , 12
1991-12-01
Miscellaneous
No indication
English
Relief Valve Opens And Closes Quickly
NTRS | 1988
|NTRS | 1988
|British Library Online Contents | 1999
Engineering Index Backfile | 1928
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