The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Study on the Control of the Axial Thrust of a Pump for Liquid Rocket Engine Turbopumps

액체로켓엔진 터보펌프용 펌프의 축추력 조절에 관한 연구

  • 최창호 (한국항공우주연구원 터보펌프팀) ;
  • 노준구 (한국항공우주연구원 터보펌프팀) ;
  • 김대진 (한국항공우주연구원 터보펌프팀) ;
  • 김진한 (한국항공우주연구원 터보펌프팀)
  • Received : 2011.08.11
  • Accepted : 2012.01.05
  • Published : 2012.02.01
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Abstract

The magnitude of the axial thrust acting on pump bearings has a great influence on the operational reliability and service life of a pump for turbopumps. In the present study, radial vanes are introduced to the pump casing to control the axial thrust by changing the cavity pressure between the impeller and the casing. To investigate the effect of the vanes on the axial thrust of the pump, experimental and computational studies were performed with and without the vanes. It is shown that the vanes reduce the cavity pressure by preventing the flow from rotating with the impeller. Experimental and computational results show similar trend for the axial thrust difference between two cases with and without the vanes. The results show that the cavity vanes are very effective in controlling the magnitude of the axial thrust.

Keywords

References

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