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Reducing Water/Hull Drag By Injecting Air Into GroovesProposed technique for reduction of friction drag on hydrodynamic body involves use of grooves and combinations of surfactants to control motion of layer on surface of such body. Surface contains many rows of side-by-side, evenly spaced, longitudinal grooves. Dimensions of grooves and sharpnesses of tips in specific case depends on conditions of flow about vessel. Requires much less air than does microbubble-injection method.
Document ID
19910000658
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Reed, Jason C.
(Old Dominion Univ.)
Bushnell, Dennis M.
(NASA Langley Research Center, Hampton, VA.)
Weinstein, Leonard M.
(NASA Langley Research Center, Hampton, VA.)
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
LAR-14078
Accession Number
91B10658
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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