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Spacecraft Lighting to Mitigate Microbial GrowthISS crew health research indicate risk for immune system degradation for long duration missions, necessitating the need to maximize countermeasures on microbial growth (1). This project will investigate applications using violet (400nm) LEDs to mitigate growth of bacteria on architectural surfaces. The application is primarily for architectures and surfaces where a higher amount of bacterial growth is expected. The project will build two different types of violet light sources that represent lamp types that could be installed in spacecraft applications. Under a controlled setting, using violet LEDs, the evaluation will test the effectiveness of a glowing work surface using LED Panel verses an LED array overhead lamp. The effectiveness of the lighting systems to attenuate bacterial growth will be compared to a control. The results of this study can be used to inform spacecraft system architects on novel ways to improve habitat health, and reduce reliance on manual cleaning methods.

Document ID
20190032560
Acquisition Source
Johnson Space Center
Document Type
Other
Authors
Clark, Toni A. (Wyle Laboratories, Inc. Houston, TX, United States)
Castro, Christian (Wyle Laboratories, Inc. Houston, TX, United States)
Date Acquired
November 7, 2019
Publication Date
September 5, 2019
Subject Category
Life Sciences (General)
Report/Patent Number
JSC-E-DAA-TN73574-3
Distribution Limits
Public
Copyright
Public Use Permitted.

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