NDLI: Study of blade clearance effects on centrifugal pumps

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Study of blade clearance effects on centrifugal pumps

Content Provider	NASA Technical Reports Server (NTRS)
Author	Nielson, C. E. Hoshide, R. K.
Copyright Year	1972
Description	A program of analysis, design, fabrication, and testing has been conducted to develop and experimentally verify analytical models to predict the effects of impeller blade clearance on centrifugal pumps. The effect of tip clearance on pump efficiency, and the relationship between the head coefficient and torque loss with tip clearance was established. Analysis were performed to determine the cost variation in design, manufacture, and test that would occur between unshrouded and shrouded impellers. An impeller, representative of typical rocket engine impellers, was modified by removing its front shroud to permit variation of its blade clearances. It was tested in water with special instrumentation to provide measurements of blade surface pressures during operation. Pump performance data were obtained from tests at various impeller tip clearances. Blade pressure data were obtained at the nominal tip clearance. Comparisons of predicted and measured data are given.
File Size	21293881
Page Count	256
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19730003766
Archival Resource Key	ark:/13960/t13n6x95f
Language	English
Publisher Date	1972-11-01
Access Restriction	Open
Subject Keyword	Machine Elements And Processes Equipment Specifications Performance Tests Compressor Blades Compressor Efficiency Centrifugal Pumps Clearances Pump Impellers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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