International Journal of Aerospace System Engineering

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Experimental Installation of Pressure Oscillation based on Pulse-driving Technique

  • YANG, Tian-hao (Science & Technology on Combustion, Internal Flow,& Thermal-structure Laboratory, Northwestern Polytechnical University) ;
  • LIU, Pei-jin (Science & Technology on Combustion, Internal Flow,& Thermal-structure Laboratory, Northwestern Polytechnical University) ;
  • JIN, Bing-ning (Science & Technology on Combustion, Internal Flow,& Thermal-structure Laboratory, Northwestern Polytechnical University)
  • Received : 2015.06.14
  • Accepted : 2015.06.29
  • Published : 2015.06.30
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Abstract

Under the background of combustion instability in solid rocket motor, to study the relationship between pressure oscillations and dynamic process of propellant flames, it is necessary to simulate an oscillation environment with certain frequency, amplitude and duration. This paper presents an experimental installation of pressure oscillation based on pulse-driving technique, with which pressure oscillations features under different pulse-driving conditions were compared and analyzed. For the pulse-driver applied in this paper, a pressure oscillation with 0.15s-0.5s duration, 179Hz-210Hz first order frequency, 0.04MPa-0.35MPa amplitude is simulated. The test results show that an oscillation with higher frequency and lager amplitude can be obtained when pulse-driver is installed on the top of the installation cavity, while on the side, an oscillation with a longer duration and approximate cavity natural frequency can be simulated.

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References

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