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http://dx.doi.org/10.5139/JKSAS.2002.30.1.088

Papers : Application of Cavitating Venturi for Stable propellant feed system  

Park,Hui-Ho
Kim,Yu
Jang,Eun-Yeong
Lee,Su-Yong
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.30, no.1, 2002 , pp. 88-94 More about this Journal
Abstract
For the pressurized propellant supply system of liquid rocket, feed pressure is determined with respect to the chamber pressure of normal combustion state. However, during ignition period the initial chamber pressure is atmosopheric. This may cause overflow, hard-start and even critical damage for the engine. This paper proposes an improved propellant feed system for the stable combustion of liquid rocket. The proposed system utilizes the cavitating venturi to provide stable mass flow rate. Cavitating venturi offers unique flow control capabilities at normal and abnormal combustion state, because flow rate is soley dependent on the upstream absolute pressure and fluid properties, but independent on th downstream condition. Experimental variables are propellant feed pressure and chamber pressure. The effectiveness of cavitating venturi increased when the ratio of actual feed pressure to the cavitating venturi design pressure is increased. It is also found that Kerosene if more effective to supply stable mass flow rate than LOx.
Keywords
Feed Pressure; Flow Control; Choke;
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  • Reference
1 G. P. Sutton, "Rocket Propulsion Elements", 6th ed., Jhon Wiley & Sons, Inc., 1992
2 Hunter Rouse,"Fluid Mechanics for Hydraulic Engineers", Dover Publication, Inc., 1961
3 M. J. Robinson, F. G. Hammitt, "Detailed Damage Charateristics in a Cavitating Venturi", Labotaty for fluid flow and heat transport phenomena nuclear engineering department The University of Michigan Internal report No. 30, 1966
4 W. M. Swanson, "Fluid Mechanics", Holt Rinehart & Winstion, Inc., 1970
5 L. R. Iwanicki, "Effect of a Cavitating Venturi", AIAA, Vol.2, NO.4, pp. 753-755, 1964   DOI
6 I. Y. Chen, "Small Cavitating Venturi Performance Characteristics at Low Inlet Subcooling", J. Thermophysics Vol. 12. No.4: Technical Notes
7 M. J. Robinson, F. G. Hammitt, J. F. Lafferty, R. garcis, "Futher Cavitation Damage Characteristics in a Cavitating Venturi Using Water and Mercury as Test Fluids", Labotaty for fluid flow and heat transport phenomena nuclear engineering department The University of Michgan Technical report No. 03424-20, 1966
8 M. R. Baum, "The Influence of Velocity and Scale on Cavitation Inception where Wall-generated Gas Bubbles are the Sole Source of cavitation Nuclei", Journal mechanical engineering science Vol. 17 No. 2, 1975
9 홍용식, “우주추진공학”, 청문각, 1994.
10 J. H. Gummer, M. T. Thew, "Venturi Investigations into Cavitation in Ethylene glcol/Water Mixtures", Proc. Instn. Mech. Engrs. Vol. 212 prat E, 1998
11 Hunter Rouse, "Elementary Mechanics of Fluid", John wiley & Sons, Inc., 1946
12 Frederick G. Hammitt, "Cavitation and Multiphase Flw Phenomena", Mcgraw-Hill International Book Company, 1980
13 Yves Lecoffre, "cavitation Bubble Trackers", A.A. Balkema, 1999