In-flight experience of the Mars Science Laboratory Guidance, Navigation, and Control system for Entry, Descent, and Landing

The Mars Science Laboratory (MSL) project successfully landed the rover Curiosity in Gale crater in August 5, 2012, thus demonstrating and validating a series of technical innovations and advances which resulted in a quantum leap in Entry, Descent, and Landing (EDL) performance relative to previous missions. These included the first use at Mars of Entry Guidance to reduce the size of the landing ellipse and the first use of the SkyCrane landing architecture to enable the placement of a 1 ton class rover on the surface of the red planet. Both of these advances required innovations in the design, analysis and testing of the Guidance, Navigation, and Control system. This paper will start with a high-level description of the MSL EDL/GN&C system design and performance requirements, followed by a brief discussion of the risks and uncertainties as they were understood prior to landing, and the actual in-flight GN&C performance as reconstructed from telemetry. Finally, this paper will address areas of improvements for future Mars EDL missions.

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Acknowledgments

The authors would like to thank Adam Steltzner (JPL), David Way (LaRC), Jody Davis (LaRC), Lynn McGrew (JSC), Allen Chen (JPL), Steve Sell (JPL), Devin Kipp (JPL), and Ray Baker (JPL) for providing materials and consultation for this paper, as well as to the rest of the MSL EDL team that were an integral and essential part of the success of Curiosity’s landing.

The work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. © 2014 California Institute of Technology. Government sponsorship acknowledged.

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Authors and Affiliations

  1. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA Miguel San Martin, Paul B. Brugarolas, Gurkirpal Singh, Frederick Serricchio, Steven W. Lee, Edward C. Wong & John C. Essmiller
  2. NASA Johnson Space Center, Houston, TX, 77058, USA Gavin F. Mendeck
  1. Miguel San Martin