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Mars Exploration Rovers Propulsive Maneuver DesignThe Mars Exploration Rovers Spirit and Opportunity successfully landed respectively at Gusev Crater and Meridiani Planum in January 2004. The rovers are essentially robotic geologists, sent on a mission to search for evidence in the rocks and soil pertaining to the historical presence of water and the ability to possibly sustain life. In order to conduct NASA's 'follow the water' strategy on opposite sides of the planet Mars, an interplanetary journey of over 300 million miles culminated with historic navigation precision. Rigorous trajectory targeting and control was necessary to achieve the atmospheric entry requirements for the selected landing sites. The propulsive maneuver design challenge was to meet or exceed these requirements while preserving the necessary design margin to accommodate additional project concerns. Landing site flexibility was maintained for both missions after launch, and even after the first trajectory correction maneuver for Spirit. The final targeting strategy was modified to improve delivery performance and reduce risk after revealing constraining trajectory control characteristics. Flight results are examined and summarized for the six trajectory correction maneuvers that were planned for each mission.
Document ID
20070023577
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Potts, Christopher L. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Raofi, Behzad (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kangas, Julie A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 23, 2013
Publication Date
August 16, 2004
Subject Category
Spacecraft Propulsion and Power
Meeting Information
AIAA/AAS Astrodynamics Specialst Conference and Exhibit(Providence, RI)
Distribution Limits
Public
Copyright
Other
Keywords
Opportunity
Mars Exploration Rover (MER)
trajectory
maneuver
Trajectory Correction Maneuver
Spirit
correction