Experimental Mechanics

, Volume 7, Issue 9, pp 19A–29A | Cite as

Spectral analysis of pump-cavitation noise

Authors discuss the use of frequency-pattern analysis to investigate a liquid-rocket pump and the fluid-cavitation characteristics therein
  • F. O. RathbunJr.
  • W. B. Giles
  • D. E. Wood
  • C. Miller
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Abstract

Pressure-transducer and accelerometer data accumulated during several water tests of a liquid-rocketengine pump were subjected to spectral analysis. The analyzer used allows signal amplitude to be displayed as a continuous function of frequency for each instant of time. Various filter bandwidths, integration times, frequency spans and display formats have been used to present the data for visual inspection. Results of attempts to discern the signature of various phases of the cavitation phenomenon occurring within the pump are reported.

Keywords

Mechanical Engineer Continuous Function Fluid Dynamics Cavitation Spectral Analysis 

References

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    Wood, D. E., “New Display Format and a Flexible-Time Integrator for Spectral-Analysis Instrumentation,”Jnl. Acoustical Soc. Am.,36 (4),639–643 (1964).Google Scholar
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    Wood, D. E., andHewitt, T. L., “New Instrumentation for Making Spectrographic Pictures of Speech,”,35 (8),1274–1278 (1963).Google Scholar
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    Albers, V. M., “Underwater Acoustic Handbook,” The Penn. State Univ. Press., 45.Google Scholar
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    Hueter, T. B., and Bolt, R. H., “Sonics,” J. Wiley and Sons, 229.Google Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 1967

Authors and Affiliations

  • F. O. RathbunJr.
  • W. B. Giles
  • D. E. Wood
  • C. Miller
    • 1
  1. 1.Propulsion Division George C. Marshall Space Flight CenterNASAHuntsville

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