Particle damping characteristics of low and medium frequency oscillation in solid rocket motor

Shaojuan Wei, Peijin Liu, Bingning Jin, Wenjing Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Except for high frequency (>1000Hz) combustion instability, nonlinear combustion instability in the low and medium frequency (100-1000Hz) has been observed in solid rocket motor (SRM) in recent years. In this paper, particle damping characteristics of the low and medium frequency oscillation are analyzed in SRM. Particle damping is highly dependent on the particle size distribution of the condensed combustion products of propellant in the SRM, which is actually affected by the operating pressure and the initial aluminum particle size in the propellant. In order to determine the particle size distribution of the condensed combustion products, using three propellant samples with different initial aluminum particle sizes, the collecting experiments are carried out under different operating pressure (3-7 MPa). Particle damping of the condensed combustion products is calculated with the distribution of particle size as input using the method modified by Culick. The effects of different operating pressure and initial aluminum particle sizes on the particle damping are analyzed in the frequency range of 100-1000Hz.

Original languageEnglish
Title of host publication68th International Astronautical Congress, IAC 2017
Subtitle of host publicationUnlocking Imagination, Fostering Innovation and Strengthening Security
PublisherInternational Astronautical Federation, IAF
Pages1271-1275
Number of pages5
ISBN (Print)9781510855373
StatePublished - 2017
Event68th International Astronautical Congress: Unlocking Imagination, Fostering Innovation and Strengthening Security, IAC 2017 - Adelaide, Australia
Duration: 25 Sep 201729 Sep 2017

Publication series

NameProceedings of the International Astronautical Congress, IAC
Volume2
ISSN (Print)0074-1795

Conference

Conference68th International Astronautical Congress: Unlocking Imagination, Fostering Innovation and Strengthening Security, IAC 2017
Country/TerritoryAustralia
CityAdelaide
Period25/09/1729/09/17

Keywords

  • Low
  • Medium frequency
  • Nonlinear combustion instability
  • Particle damping

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