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Mars Exploration Rover thermal test program overview

Show simple item record Pauken, Michael T. Kinsella, Gary Novak, Keith Tsuyuki, Glenn 2006-01-25T23:32:34Z 2006-01-25T23:32:34Z 2004-07-19
dc.identifier.citation 34th International Conference on Environmental Systems (ICES), Colorado Springs, Colorado, July 19-22, 2004. en
dc.identifier.clearanceno 04-0946
dc.description.abstract In January 2004, two Mars Exploration Rovers (MER) landed on the surface of Mars to begin their mission as robotic geologists. A year prior to these historic landings, both rovers and the spacecraft that delivered them to Mars, were completing a series of environmental tests in facilities at the Jet Propulsion Laboratory. This paper describes the test program undertaken to validate the thermal design and verify the workmanship integrity of both rovers and the spacecraft. The spacecraft, which contained the rover within the aeroshell, were tested in a 7.5 m diameter thermal vacuum chamber. Thermal balance was performed for the near earth (hot case) condition and for the near Mars (cold case) condition. A solar simulator was used to provide the solar boundary condition on the solar array. IR lamps were used to simulate the solar heat load on the aeroshell for the off-sun attitudes experienced by the spacecraft during its cruise to Mars. Each rover was tested separately in a 3.0 m diameter thermal vacuum chamber over conditions simulating the warmest and coldest expected Mars diurnal temperature cycles. The environmental tests were conducted in a quiescent nitrogen atmosphere at a pressure of 8 to 10 Torr. In addition to thermal balance testing, the science instruments on board the rovers were tested successfully in the extreme environmental conditions anticipated for the mission. A solar simulator was not used in these tests. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 2295507 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004 en
dc.subject thermal test program en
dc.subject Mars Exploration Rover (MER) en
dc.subject thermal vacuum test en
dc.title Mars Exploration Rover thermal test program overview en
dc.type Preprint en

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