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Verification of the Effectiveness of Devices for the Protection of the Exterior Surface of ISS from Contaminants Deposited by Pulsed Cycling of Liquid-Jet (Kromka)
04.26.13

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

Experiment Overview

This content was provided by Yu I. Gerasimov, and is maintained in a database by the ISS Program Science Office.

Brief Summary

Kromka investigates the contamination of critical external surfaces (such as radiators, solar arrays, etc) caused by propulsion thrusters of the various vehicles flying to the ISS and is assessing the efficiency of various gas-dynamic protective devices to minimize thruster contamination.

Principal Investigator(s)

  • Yu I. Gerasimov, Russia

    • Co-Investigator(s)/Collaborator(s)

    Information Pending

    Developer(s)
    Information Pending

    Sponsoring Space Agency

    Russian Federal Space Agency (Roscosmos)

    Sponsoring Organization

    Information Pending

    Research Benefits

    Information Pending

    ISS Expedition Duration:

    August 2001 - September 2006

    Expeditions Assigned

    3,4,5,6,7,8,9,10,11,12,13

    Previous ISS Missions

    Information Pending

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    Experiment Description

    Research Overview

    Information Pending

    Description

    Checkout of the efficiency of operation of gas-dynamic protective devices accommodated on the Service module and designed to protect the ISS surfaces against contaminants produced by pulse activation of control liquid-jet thrusters. Study of the effect of contaminants deposition on the characteristics of materials specimens and external coatings of the ISS elements (radiators, solar array panels, etc.).

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    Applications

    Space Applications

    Information Pending

    Earth Applications

    Information Pending

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    Operations

    Operational Requirements

    Boards with materials specimens.

    Operational Protocols

    Installation of boards with materials specimens on the external surface of the Zvezda Service module (SM) of the ISS RS in the periphery area of the jet of the thrusters nozzles during extravehicular activity. Passive exposure of the boards on the SM external surface. Dismounting of the boards after long-duration exposure during extravehicular activity and their return to the ground for processing of the experiment results.

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    Results/More Information

    Assessment of the efficiency of gas-dynamic protective devices and development of recommendations (if necessary) on possible modifications thereof.

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    Related Websites
  • Coordinating Scientific and Technical Council of the Russian Space Agency [Russian]
  • Energia - Science Research on the ISS Russian Segment

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    Imagery

    image One of the specimen boards.
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    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.
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