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Mars Science Laboratory rover system thermal test

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dc.contributor.author Novak, Keith S.
dc.contributor.author Kempenaar, Joshua E.
dc.contributor.author Liu, Yuanming
dc.contributor.author Bhandari, Pradeep
dc.contributor.author Dudik, Brenda A.
dc.date.accessioned 2015-03-11T23:23:17Z
dc.date.available 2015-03-11T23:23:17Z
dc.date.issued 2012-07-15
dc.identifier.citation 42nd International Conference on Environmental Systems, San Diego, California, July 15-19, 2012 en_US
dc.identifier.clearanceno 12-2502
dc.identifier.uri http://hdl.handle.net/2014/44990
dc.description.abstract On November 26, 2011, NASA launched a large (900 kg) rover as part of the Mars Science Laboratory (MSL) mission to Mars. The MSL rover is scheduled to land on Mars on August 5, 2012. Prior to launch, the Rover was successfully operated in simulated mission extreme environments during a 16-day long Rover System Thermal Test (STT). This paper describes the MSL Rover STT, test planning, test execution, test results, thermal model correlation and flight predictions. The rover was tested in the JPL 25-Foot Diameter Space Simulator Facility at the Jet Propulsion Laboratory (JPL). The Rover operated in simulated Cruise (vacuum) and Mars Surface environments (8 Torr nitrogen gas) with mission extreme hot and cold boundary conditions. A Xenon lamp solar simulator was used to impose simulated solar loads on the rover during a bounding hot case and during a simulated Mars diurnal test case. All thermal hardware was exercised and performed nominally. The Rover Heat Rejection System, a liquid-phase fluid loop used to transport heat in and out of the electronics boxes inside the rover chassis, performed better than predicted. Steady state and transient data were collected to allow correlation of analytical thermal models. These thermal models were subsequently used to predict rover thermal performance for the MSL Gale Crater landing site. Models predict that critical hardware temperatures will be maintained within allowable flight limits over the entire 669 Sol surface mission. 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, 2012 en_US
dc.title Mars Science Laboratory rover system thermal test en_US
dc.type Preprint en_US


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