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OSIRIS-REx Contamination Control Strategy and Implementation

Dworkin, J.P.; Adelman, L.A.; Ajluni, T.; Andronikov, A.V.; Aponte, J.C.; Bartels, A.E.; Beshore, E.; Bierhaus, E.B.; Brucato, J.R.; Bryan, B.H.; Burton, A.S.; Callahan, M.P.; Castro-Wallace, S.L.; Clark, B.C.; Clemett, S.J.; Connolly, H.C.; Cutlip, W.E.; Daly, S.M.; Elliott, V.E.; Elsila, J.E.; Enos, H.L.; Everett, D.F.; Franchi, I.A.; Glavin, D.P.; Graham, H.V.; Hendershot, J.E.; Harris, J.W.; Hill, S.L.; Hildebrand, A.R.; Jayne, G.O.; Jenkens, R.W.; Johnson, K.S.; Kirsch, J.S.; Lauretta, D.S.; Lewis, A.S.; Loiacono, J.J.; Lorentson, C.C.; Marshall, J.R.; Martin, M.G.; Matthias, L.L.; McLain, H.L.; Messenger, S.R.; Mink, R.G.; Moore, J.L.; Nakamura-Messenger, K.; Nuth, J.A.; Owens, C.V.; Parish, C.L.; Perkins, B.D.; Pryzby, M.S.; Reigle, C.A.; Righter, K.; Rizk, B.; Russell, J.F.; Sandford, S.A.; Schepis, J.P.; Songer, J.; Sovinski, M.F.; Stahl, S.E.; Thomas-Keprta, K.; Vellinga, J.M. and Walker, M.S. (2018). OSIRIS-REx Contamination Control Strategy and Implementation. Space Science Reviews, 214, article no. 19.

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OSIRIS-REx will return pristine samples of carbonaceous asteroid Bennu. This article describes how pristine was defined based on expectations of Bennu and on a realistic understanding of what is achievable with a constrained schedule and budget, and how that definition flowed to requirements and implementation. To return a pristine sample, the OSIRIS-REx spacecraft sampling hardware was maintained at level 100 A/2 and <180 ng/cm2 of amino acids and hydrazine on the sampler head through precision cleaning, control of materials, and vigilance. Contamination is further characterized via witness material exposed to the spacecraft assembly and testing environment as well as in space. This characterization provided knowledge of the expected background and will be used in conjunction with archived spacecraft components for comparison with the samples when they are delivered to Earth for analysis. Most of all, the cleanliness of the OSIRIS-REx spacecraft was achieved through communication among scientists, engineers, managers, and technicians.

Item Type: Journal Item
Copyright Holders: 2017 Springer Science+Business Media B.V.
ISSN: 1572-9672
Keywords: OSIRIS-REx; Bennu; asteroid; sample return; contamination
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
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Item ID: 59212
SWORD Depositor: Jisc Publications-Router
Depositing User: Jisc Publications-Router
Date Deposited: 20 Feb 2019 08:52
Last Modified: 29 Mar 2019 11:48
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