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A bubble detection system for propellant filling pipeline.

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This study introduces an ultrasound system for detecting high-speed bubbles in satellite fuel lines. The developed system accurately estimates bubble size and quantity, improving propellant filling safety.

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Area of Science:

  • Aerospace Engineering
  • Materials Science
  • Fluid Dynamics

Background:

  • Accurate monitoring of bubbles in propellant filling pipelines is crucial for satellite safety.
  • Traditional ultrasonic methods may miss bubbles near pipe walls due to beam width limitations.
  • High-speed bubble detection presents significant challenges in confined industrial environments.

Purpose of the Study:

  • To develop and evaluate an ultrasound transmission-based system for detecting high-speed bubbles.
  • To address the challenge of detecting bubbles near pipe walls in vertical pipelines.
  • To enable accurate estimation of bubble size, quantity, and total volume.

Main Methods:

  • Comparison of three common ultrasonic detection methods, selecting the ultrasound transmission method.
  • Investigation of ultrasound beam behavior in vertical pipes and design of a spiral flow device.
  • Experimental validation using generated bubbles of five different sizes for performance evaluation.

Main Results:

  • The developed system successfully detects and estimates the sizes and quantities of bubbles.
  • Different bubble radii can be distinguished, indicating size-specific detection capabilities.
  • A numerical relationship between ultrasound attenuation and bubble radius was established for precise measurement.

Conclusions:

  • The proposed ultrasound transmission system with a spiral flow device is effective for high-speed bubble detection.
  • The system enables accurate quantification of bubbles, including size distribution and total volume.
  • This technology enhances safety and efficiency in satellite propellant filling operations.