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Solid State Lighting Module, SDTO 15008U (SSLM)
03.22.12

Overview | Description | Applications | Operations | Results | Publications | Images

Experiment/Payload Overview

Brief Summary

The Solid-State Lighting Module (SSLM), SDTO 15008U is a Station Development Test Objective (SDTO) sponsored by the National Aeronautics and Space Administration (NASA) to demonstrate the advantages of Light-Emitting Diode (LED) lighting systems within the spacecraft environment.

Principal Investigator

  • Daniel Shultz, , Kennedy Space Center, Cape Canaveral, FL, United States

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

    Information Pending

    Payload Developer

    Kennedy Space Center, Cape Canaveral, FL, United States

    Sponsoring Space Agency

    National Aeronautics and Space Administration (NASA)

    Sponsoring Organization:

    Exploration Systems Mission Directorate (ESMD)

    ISS Expedition Duration:

    October 2008 - April 2009



    Expeditions Assigned

    18

    Previous ISS Missions

    SSLM is a unique SDTO which has not been performed in microgravity.

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    Experiment/Payload Description

    Research Summary

    • The Solid-State Lighting Module (SSLM), SDTO 15008U is a Station Development Test Objective (SDTO) designed to demonstrate the advantages of Light-Emitting Diode (LED) lighting systems for the spacecraft environment.

    Description

    The Solid-State Lighting Module (SSLM), SDTO 15008U is a Station Development Test Objective (SDTO) sponsored by the National Aeronautics and Space Administration (NASA) designed to replace a General Luminaire Assembly (GLA) unit already in use on the International Space Station (ISS). The SSLM is identical to the GLA in fit and form. The SSLM will temporarily replace a GLA on ISS. The crew will be asked to complete a brief evaluation regarding the quality of the light output and the usefulness of the dimming feature. The SSLM measures 26.5" x 6.6" x 3.9" and has a mass of approximately 7.5 pounds.

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    Applications

    Space Applications

    SSLM on the ISS will begin the evaluation of LED lighting systems for the next generation of crew exploration vehicles. SSLM will effectively evaluate potential savings of LED technology vs. currently installed systems.

    Earth Applications

    Analysis of the crew evaluations will be presented to NASA several boards after data return. A final report will be completed and archived for use in design of lighting systems in the next generation of exploration vehicles.

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    Operations

    Operational Requirements

    The SSLM requires the +120 VDC power supply of the GLA. The continuous and peak power requirement is 30W. The crewmember will transfer the SSLM to a stowage location on ISS. To complete the SSLM on-orbit operations, the crewmember will remove the pre-existing GLA, transfer the GLA to a stowage location, remove the SSLM from its stowage location, transfer the SSLM to the mounting location, and install it. The SSLM installation procedures will be identical to the GLAs to eliminate the need for additional tools or training.

    There will be a ten-minute crew evaluation to rate the quality of the SSLM light output, the usefulness of the dimming feature and the ease of installation and removal. The SSLM will be removed from its GLA location following completion of the evaluation.

    Operational Protocols

    The SSLM requires transfer to the mounting location, installation of the SSLM into the mounting location, and removal of the SSLM from the mounting location upon completion. The evaluation should be completed by a minimum of two crewmembers in one session each. Additional sessions are welcome based on crew availability and time.

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    Results/More Information

    Information Pending

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    Related Web Sites

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    Publications

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    Ground Based Results Publications

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    ISS Patent Publications

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    Related Publications

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    Images

    imageFlight unit Solid State Lighting Module (SSLM) at Kennedy Space Center. Image courtesy of Kennedy Space Center.


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    image(Top) SSLM with LED diffuser attached and (bottom) LED board without LED diffuser attached. Image courtesy of Kennedy Space Center.


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    imageNASA Image: ISS018E010657 - View of Michael Fincke holding a General Luminaire Assembly (GLA) in Node 2.


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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-Payloads-Helpline.
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