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OSIRIS-REx Touch-and-Go (TAG) Mission Design for Asteroid Sample CollectionThe Origins Spectral Interpretation Resource Identification Security Regolith Explorer (OSIRIS-REx) mission is a NASA New Frontiers mission launching in September 2016 to rendezvous with the near-Earth asteroid Bennu in October 2018. After several months of proximity operations to characterize the asteroid, OSIRIS-REx flies a Touch-And-Go (TAG) trajectory to the asteroid's surface to collect at least 60 g of pristine regolith sample for Earth return. This paper provides mission and flight system overviews, with more details on the TAG mission design and key events that occur to safely and successfully collect the sample. An overview of the navigation performed relative to a chosen sample site, along with the maneuvers to reach the desired site is described. Safety monitoring during descent is performed with onboard sensors providing an option to abort, troubleshoot, and try again if necessary. Sample collection occurs using a collection device at the end of an articulating robotic arm during a brief five second contact period, while a constant force spring mechanism in the arm assists to rebound the spacecraft away from the surface. Finally, the sample is measured quantitatively utilizing the law of conservation of angular momentum, along with qualitative data from imagery of the sampling device. Upon sample mass verification, the arm places the sample into the Stardust-heritage Sample Return Capsule (SRC) for return to Earth in September 2023.
Document ID
20140017837
Document Type
Conference Paper
Authors
May, Alexander (Lockheed Martin Space Systems Co. Bethesda, MD, United States)
Sutter, Brian (Lockheed Martin Space Systems Co. Bethesda, MD, United States)
Linn, Timothy (Lockheed Martin Space Systems Co. Bethesda, MD, United States)
Bierhaus, Beau (Lockheed Martin Space Systems Co. Bethesda, MD, United States)
Berry, Kevin (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mink, Ron (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
December 30, 2014
Publication Date
September 29, 2014
Subject Category
Lunar and Planetary Science and Exploration
Astrodynamics
Report/Patent Number
GSFC-E-DAA-TN17406
Meeting Information
International Astronautical Congress(Toronto)
Funding Number(s)
CONTRACT_GRANT: NNG12FD66C
WBS: WBS 08181401
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
OSIRIS-REX TOUCH-AND-GO (TAG) MISSION DESIGN FOR ASTEROID SAMPLE COLLECTION OSIR
MISSION DESIGN
ASTEROID

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