Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"OSIRIS-REx"”.
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Optimized Thruster Allocation Utilizing Dual Quaternions for the Asteroid Sample Return Mission (OSIRIS-REx)
… This thesis presents a simulation of the OSIRIS-REx mission during the descent phase to the asteroid Bennu, with a focus on utilizing dual quaternion dynamics and a newly developed thruster allocation method. The dual quaternion based dynamics are chosen in order to demonstrate its …
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Radiation management, avionics development, and integrated testing of a Class-D space-based asteroid X-ray spectrometer
The Regolith X-ray Imaging Spectrometer (REXIS) is a student designed and built payload instrument aboard NASA's OSIRIS-REx asteroid sample return mission. The interplanetary target for this mission is a primitive asteroid known as Bennu that is believed to be relatively unchanged since the …
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Fault tolerant design implementation on radiation hardened by design SRAM-Based FPGAs
… to the embedded avionics design of the REXIS imaging payload on the OSIRIS-REx asteroid sample return mission.
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Characterization of solar X-ray response data from the REXIS instrument
The REgolith X-ray Imaging Spectrometer (REXIS) is a student-built instrument that was flown on NASA's Origins, Spectral Interpretation, Resource Identification, Safety, Regolith Explorer (OSIRIS-REx) mission. During the primary science observation phase, the REXIS Solar X-ray Monitor (SXM) …
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A root cause analysis of REXIS detection efficiency loss during phase E operations
The Regolith X-ray Imaging Spectrometer (REXIS) is a student-built instrument flown on NASA's Origins, Spectral Interpretation, Resource Identification, Safety, Regolith Explorer (OSIRIS-REx) mission. During main science operations, the instrument experienced detector efficiency loss in the form of …
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Mechanical design, calibration, and environmental protection of the REXIS DAM
The REgolith X-ray Imaging Spectrometer (REXIS) is a joint effort by MIT and Harvard to build the student-collaboration experiment aboard OSIRIS-Rex, an asteroid sample return mission sponsored by the NASA New Frontiers program. OSIRISREx is scheduled to launch to near-Earth asteroid Bennu in 2016. …
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Characterization of solar X-ray response data from the REXIS instrument
The REgolith X-ray Imaging Spectrometer (REXIS) is a student-built instrument that was flown on NASA's Origins, Spectral Interpretation, Resource Identification, Safety, Regolith Explorer (OSIRIS-REx) mission. During the primary science observation phase, the REXIS Solar X-ray Monitor (SXM) …
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The engineering design of the REXIS Solar X-ray Monitor and risk management considerations for resource constrained payload development
The REgolith X-ray Imaging Spectrometer (REXIS) is a student collaboration instrument aboard the NASA New Frontiers Program's OSIRIS-REx spacecraft. Set to launch in 2016 OSIRIS-REx will travel to, survey, and return a sample from the near-earth asteroid Bennu. One of five hosted payloads, REXIS …
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Integration and test of the REgolith X-ray Imaging Spectrometer and recommendations for low-cost, high-risk spaceflight programs
… The Regolith X-Ray Imaging Spectrometer (REXIS) is a Class D student collaboration instrument flying on the NASA OSIRIS-REx mission. This thesis describes and analyzes the NASA management and systems engineering processes that were tailored for REXIS. Part of the Class D approach is to …
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Application of Bayesian-based uncertainty and global sensitivity analyses to spacecraft thermal design
… to the REgolith X-ray Imaging Spectrometer (REXIS), a student built x-ray spectrometer aboard NASA's OSIRIS-REx mission. Uncertainty analysis shows the area of the main instrument's radiator could have been reduced by 11%, as compared to the design obtained from conventional techniques, and …
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The formation and evolution of planetary systems
… System. We do this within the context of NASA's OSIRIS-REx asteroid sample return mission. OSIRIS-REx, which launches in September 2016, will arrive at the near-Earth asteroid 101955 Bennu in 2019 with the objective of constraining its composition, orbit, and other bulk properties. In order to …
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Improving the design process of the REgolith X-ray Imaging Spectrometer with model-based systems engineering
… of the REgolith Imaging X-ray Spectrometer (REXIS), a student-built instrument on the OSIRIS-REx asteroid sample return mission, against a hypothetical development timeline that incorporates information from system models. The system models, constructed in SysML, capture the topological …
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Sizing the X-ray spectral resolution limits of the REgolith X-ray Imaging Spectrometer (REXIS) instrument at Asteroid 1999RQ36
The REgolith X-ray Imaging Spectrometer (REXIS), a Charge-Coupled Device (CCD)-based coded aperture soft X-ray (0.3-7.5 keV) telescope for remote geochemical X-ray Fluorescence (XRF) spectrometry, will be flying on board the Origins Spectral Interpretations Resource Identification Security Regolith …
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Model-based requirement definition for instrument systems
… to the Regolith X-ray Imaging Spectrometer (REXIS), an instrument currently in development at MIT and scheduled to launch on NASA's OSIRIS-REx asteroid sample return mission in the fall of 2016. REXIS will determine the elemental composition of the target asteroid by measuring the …
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The REgolith X-ray Imaging Spectrometer flight model : structural design, analysis, and testing
… of the REgolith Xray Imaging Spectrometer (REXIS), a student-led instrument on board the National Aeronautics and Space Administration (NASA) Origins Spectral Interpretation Resource Identification and Security-Regolith Explorer (OSIRIS-REx) asteroid sample return mission. As part a student …