Record Display for the EPA National Library Catalog


Main Title The vertical planar motion mechanism : a dynamic test apparatus for evaluating current meters and other marine instrumentation /
Author Kalvaitis, A. N.
CORP Author National Ocean Survey, Rockville, MD. Test and Evaluation Lab.;Environmental Protection Agency, Washington, DC. Office of Energy, Minerals and Industry.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Office of Energy, Minerals, and Industry ; Available through the National Technical Information Service,
Year Published 1978
Report Number EPA-600/7-78-145
Stock Number 22161
OCLC Number 04526964
Subjects Oceanographic instruments--Testing ; Flow meters--Testing
Additional Subjects Flowmeters ; Test facilities ; Model basins ; Towed bodies ; Dynamic tests ; Towing vehicles ; Error analysis ; Data acquisition ; Oceanographic equipment ; Current meters ; Vertical planar motion mechanisms
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-7-78-145 c.1 Headquarters Library/Washington,DC 09/30/2013
EKBD  EPA-600/7-78-145 Research Triangle Park Library/RTP, NC 08/25/2000
ELBD ARCHIVE EPA 600-7-78-145 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-7-78-145 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-286 571 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 37 p. : ill. ; 27 cm.
The overall objective was to provide a dynamic test apparatus that can produce known, controlled high frequency dynamics for the evaluation of current meters and other marine instrumentation. Of primary interest is the establishment of flow sensor measurement capabilities, and hence, data quality in an unsteady flow environment. The culmination of this development is a Vertical Planar Motion Mechanism (VPMM) that generates three major modes of dynamics--vertical circular, vertical and horizontal--at length scales from .15 to 1.22 meters and time scales from 5 to 12 seconds. The VPMM mounts on a tow carriage which provides the steady velocity while the VPMM superimposes oscillatory motions on full size current meters. The VPMM is instrumented such that the instantaneous velocities of the test sensors and their outputs may be measured at a 20Hz sampling rate; an on-board computer allows for near-real time data analysis. This report describes the development, and wet acceptance testing of the VPMM using several types of current sensors, including an electromagnetic and acoustic variety. Current sensor dynamic response is also documented. No deleterious interactions were noted between the VPMM and the test instruments; the VPMM performance was within specifications for all conditions investigated.