Krisko, Paula

NASA Technical Reports Server

National Aeronautics and Space Administration
NASA Main Activities (1/2)
• Study of Orbital Debris Environment
– MMOD measurements 
• Radar (SSN, HAX, Haystack, Goldstone, 1957 to present)
• Optical (MODEST, 2004-2006, 2007-2009,2010-2012)
• STS window and radiator surfaces (1992-2011)
• HST WFPC2 radiator (returned surfaces 1993-2009)
• DRAGONS/SDS (Debris Resistive/Acoustic Grid Orbital NASA-Navy 
Sensor/Space Debris Sensor)
 SDS to launch in October 2017 to ISS Columbus module
• Highly dynamic environment
– Ground tests in 2014 (DebriSat and DebrisLV )
• 2 impact tests were completed successfully. 
• ~ 112K  fragments have been extracted (and bagged, cataloged, but not 
completely characterized) . We expect ~200K. 
 DebriSat will be discussed this meeting
https://ntrs.nasa.gov/search.jsp?R=20160003854 2019-08-31T03:41:36+00:00Z
National Aeronautics and Space Administration
NASA Main Activities (2/2)
• Publically available computer model upgrades
– DAS 2.1 includes ORDEM 3.0 debris environment
– ORDEM 3.0 is being upgraded to ORDEM 3.1
• Upgrades require new, more current debris environment data
• Lower priority studies
– Al2O3 vs. Al identification study 


Study of Orbital Debris Environment

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