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Meeting	ACGS Committee Meeting 123 - Santa Fe, NM - March 2019
Agenda Location	6 SUBCOMMITTEE B – MISSILES AND SPACE 6.3 GNC for Mars Entry Systems
Title	GNC for Mars Entry Systems
Presenter	Zachary Putnam
Affiliation	University of Illinois
Available Downloads*	presentation
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Abstract	Continued scientific interest in Mars, and its potential as a second home for humanity, has resulted in a sustained exploration campaign and semi-regular cadence of missions to the surface of Mars. However, more ambitious science and exploration mission goals present challenges to mission and vehicle designers that cannot be met with current technology. Previous missions and the current state-of-the-art in Mars entry, descent, and landing systems are reviewed to provide context for current technology challenges. Potential solutions to these challenges are discussed, including novel hypersonic trajectory control systems, supersonic retropropulsion, and improved navigation architectures. Presenter Bio: Dr. Zachary R. Putnam is an assistant professor in the Department of Aerospace Engineering at the University of Illinois at Urbana-Champaign. He leads a research group focused on integrated guidance, navigation, and control systems for hypersonic and space flight systems. Previously, Dr. Putnam was a member of the technical staff at the Draper Laboratory, where he led the development and analysis of the entry guidance algorithms for NASA’s Project Orion.