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Curiosity’s autonomous surface safing behavior design

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dc.contributor.author Neilson, Tracy A.
dc.contributor.author Manning, Robert M.
dc.date.accessioned 2014-02-26T23:38:47Z
dc.date.available 2014-02-26T23:38:47Z
dc.date.issued 2013-09-12
dc.identifier.citation AIAA SPACE 2013 Conference & Exposition, San Diego, California, September 10-12, 2013 en_US
dc.identifier.clearanceno CL#13-4209
dc.identifier.uri http://hdl.handle.net/2014/44367
dc.description.abstract The safing routines on all robotic deep-space vehicles are designed to put the vehicle in a power and thermally safe configuration, enabling communication with the mission operators on Earth. Achieving this goal is made a little more difficult on Curiosity because the power requirements for the core avionics and the telecommunication equipment exceed the capability of the single power source, the Multi-Mission Radioisotope Thermoelectric Generator. This drove the system design to create an operational mode, called “sleep mode”, where the vehicle turns off most of the loads in order to charge the two Li-ion batteries. The system must keep the vehicle safe from over-heat and under-heat conditions, battery cell failures, under-voltage conditions, and clock failures, both while the computer is running and while the system is sleeping. The other goal of a safing routine is to communicate. On most spacecraft, this simply involves turning on the receiver and transmitter continuously. For Curiosity, Earth is above the horizon only a part of the day for direct communication to the Earth, and the orbiter overpass opportunities only occur a few times a day. The design must robustly place the Rover in a communicable condition at the correct time. This paper discusses Curiosity’s autonomous safing behavior and describes how the vehicle remains power and thermally safe while sleeping, as well as a description of how the Rover communicates with the orbiters and Earth at specific times. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2013 en_US
dc.subject safe mode en_US
dc.subject MSL en_US
dc.subject Mars Science Laboratory en_US
dc.title Curiosity’s autonomous surface safing behavior design en_US
dc.type Preprint en_US


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