OSIRI-REx Touch and Go (TAG) Navigation Performance
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| Yayımlandı: | NASA Center for AeroSpace Information (CASI). Conference Proceedings (Jan 30, 2015) |
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| Diğer Yazarlar: | , , , |
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NASA/Langley Research Center
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| Online Erişim: | Citation/Abstract Full text outside of ProQuest |
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| Özet: | The Origins Spectral Interpretation Resource Identification Security Regolith Explorer (OSIRIS-REx) mission is a NASA New Frontiers mission launching in 2016 to rendezvous with the near-Earth asteroid (101955) Bennu in late 2018. Following an extensive campaign of proximity operations activities to characterize the properties of Bennu and select a suitable sample site, OSIRIS-REx will fly a Touch-And-Go (TAG) trajectory to the asteroid's surface to obtain a regolith sample. The paper summarizes the mission design of the TAG sequence, the propulsive maneuvers required to achieve the trajectory, and the sequence of events leading up to the TAG event. The paper also summarizes the Monte-Carlo simulation of the TAG sequence and presents analysis results that demonstrate the ability to conduct the TAG within 25 meters of the selected sample site and 2 cm/s of the targeted contact velocity. The paper describes some of the challenges associated with conducting precision navigation operations and ultimately contacting a very small asteroid. |
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| Kaynak: | Advanced Technologies & Aerospace Database |