| タイトル | Study of blade clearance effects on centrifugal pumps |
| 本文（外部サイト） | http://hdl.handle.net/2060/19730003766 |
| 著者（英） | Nielson, C. E.; Hoshide, R. K. |
| 著者所属（英） | Rockwell International Corp. |
| 発行日 | 1972-11-01 |
| 言語 | eng |
| 内容記述 | 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. |
| NASA分類 | MACHINE ELEMENTS AND PROCESSES |
| レポートNO | 73N12493
R-8806
NASA-CR-120815 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/201539 |
