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Optimization of conical hydrostatic bearing for minimum friction.Equations for the flow rate, load capacity, and friction torque for a conical hydrostatic bearing were developed. These equations were solved by a digital computer program to determine bearing configurations for minimum friction torque. Design curves are presented that show optimal bearing dimensions for minimum friction torque as a function of dimensionless flow rate for a range of dimensionless load capacity. Results are shown for both laminar and turbulent flow conditions. The results indicate that hydrostatic pocket friction is a significant portion of the total friction torque. However, the bearing dimensions for a minimum friction design are affected very little by inclusion of pocket friction in the analysis. For laminar flow the values of the outer-land radius ratio X3 and outer bearing radius ratio X4 did not change significantly with increasing friction factor. For turbulent flow, the outer bearing radius ratio X4 did not change with increasing friction factor; therefore the value determined for X4 in the laminar flow case is valid for all turbulent flows.
Document ID
19720027873
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nypan, L. J.
(San Fernando Valley State College Northridge, Calif., United States)
Hamrock, B. J.
Scibbe, H. W.
Anderson, W. J.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 6, 2013
Publication Date
October 1, 1971
Subject Category
Machine Elements And Processes
Report/Patent Number
ASME PAPER 71-LUB-19
Meeting Information
Meeting: American Society of Lubrication Engineers and American Society of Mechanical Engineers, Joint Lubrication Conference
Location: Pittsburgh, PA
Start Date: October 5, 1971
End Date: October 7, 1971
Accession Number
72A11539
Distribution Limits
Public
Copyright
Other

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