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Ferroelectric Fluid Flow Control Valve

Author
Rohrbach, Wayne W.
Published
Oct. 05, 1999.
Physical Description
1 electronic document
Additional Creators
Hellbaum, Richard F. and Jalink, Antony, Jr.
Online Version

Availability

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Restrictions on Access
Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
An active valve is controlled and driven by external electrical actuation of a ferroelectric actuator to provide for improved passage of the fluid during certain time periods and to provide positive closure of the valve during other time periods. The valve provides improved passage in the direction of flow and positive closure in the direction against the flow. The actuator is a dome shaped internally prestressed ferroelectric actuator having a curvature, said dome shaped actuator having a rim and an apex. and a dome height measured from a plane through said rim said apex that varies with an electric voltage applied between an inside and an outside surface of said dome shaped actuator.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20000030740.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15970594