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Remotely Adjustable Hydraulic PumpOutlet pressure adjusted to match varying loads. Electrohydraulic servo has positioned sleeve in leftmost position, adjusting outlet pressure to maximum value. Sleeve in equilibrium position, with control land covering control port. For lowest pressure setting, sleeve shifted toward right by increased pressure on sleeve shoulder from servovalve. Pump used in aircraft and robots, where hydraulic actuators repeatedly turned on and off, changing pump load frequently and over wide range.
Document ID
19870000037
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Kouns, H. H.
(Abex Corp.)
Gardner, L. D.
(Abex Corp.)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 1
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
MSC-21007
Accession Number
87B10037
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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