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Flame Extinguishment Experiment -2 JAXA (FLEX-2J)
05.23.13

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Overview | Description | Applications | Operations | Results | Publications | Imagery

Experiment Overview

This content was provided by Hiroshi Nomura, Ph.D., and is maintained in a database by the ISS Program Science Office.

Brief Summary

Flame Extinguishment Experiment-2 JAXA (FLEX-2J) studies the interactions of flames on the ignition (or non-ignition) and motion of millimeter-sized droplets.  The experiment operates in the Combustion Integrated Rack (CIR) and consists of a linear array of droplets, several of which are fixed, while the others are free to move along the support fiber.  The fixed droplets are ignited and the resulting flame spread and motion of the droplets observed with the CIR diagnostic cameras.

Principal Investigator(s)

  • Hiroshi Nomura, Ph.D., College of Industrial Technology, Chiba 275-8575, Japan
  • Co-Investigator(s)/Collaborator(s)

  • Daniel L. Dietrich, Ph.D., Glenn Research Center, Cleveland, OH, United States
  • Developer(s)

    Glenn Research Center, Cleveland, OH, United States
    ZIN Technologies Incorporated, Cleveland, OH, United States

    Sponsoring Space Agency

    National Aeronautics and Space Administration (NASA)

    Sponsoring Organization

    Human Exploration and Operations Mission Directorate (HEOMD)

    Research Benefits

    Information Pending

    ISS Expedition Duration

    March 2014 - September 2014

    Expeditions Assigned

    39/40

    Previous ISS Missions

    Information Pending

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    Experiment Description

    Research Overview

    • Extends the results of single droplet studies to the conditions where droplet-droplet interactions are important.  This provides insight into the fundamental physics of practical combustors.  Specifically, droplets in practical combustors interact with each other as a flame spreads through a fuel spray.  This includes not only how the flame spreads between the droplets, but also how the flame influences the motion of the droplets.

    • The combustion of liquid fuels is a major source of energy in the world and the overwhelming energy source in the transportation sector.  The combustion of liquid fuels, however, faces enormous engineering and scientific challenges in the future.  This includes minimizing the carbon footprint, minimizing pollutant emissions and combustors that can accommodate fuels from a range of fuel stocks (e.g. oil shales, biofuels, etc.).  These challenges can only be met by further our understanding of liquid fuel combustion from a fundamental perspective.  This includes detailed numerical and theoretical modeling that in turn requires validation from high quality bench-scale experiments such as FLEX-2J.

    Description

    Information Pending

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    Applications

    Space Applications

    Information Pending

    Earth Applications

    The combustion of liquid fuels is a major source of energy in the world, and the main energy source in the transportation sector.  The combustion of liquid fuels, however, faces enormous engineering and scientific challenges in the future.  This includes minimizing the carbon footprint, minimizing pollutant emissions, and combustors that can accommodate fuels from a range of fuel stocks (e.g. oil shales, biofuels, etc.).  These challenges can only be met by furthering our understanding of liquid fuel combustion from a fundamental perspective.

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    Operations

    Operational Requirements

    None.

    Operational Protocols

    Information Pending

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    Results/More Information

    Information Pending

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    Related Websites
  • FLEX-2
  • FLEX
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    Imagery

    Information provided by the investigation team to the ISS Program Scientist's Office.
    If updates are needed to the summary please contact JSC-ISS-Program-Science-Group. For other general questions regarding space station research and technology, please feel free to call our help line at 281-244-6187 or e-mail at JSC-ISS-Research-Helpline.