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Accession Number N20130009144
Title Post-Flight EDL Entry Guidance Performance of the 2011 Mars Science Laboratory Mission.
Publication Date Feb 2013
Media Count 16p
Personal Author G. F. Mendeck L. C. McGrew
Abstract The 2011 Mars Science Laboratory was the first Mars guided entry which safely delivered the rover to a landing within a touchdown ellipse of 19.1 km x 6.9 km. The Entry Terminal Point Controller guidance algorithm is derived from the final phase Apollo Command Module guidance and, like Apollo, modulates the bank angle to control the range flown. The guided entry performed as designed without any significant exceptions. The Curiosity rover was delivered about 2.2 km from the expected touchdown. This miss distance is attributed to little time to correct the downrange drift from the final bank reversal and a suspected tailwind during heading alignment. The successful guided entry for the Mars Science Laboratory lays the foundation for future Mars missions to improve upon.
Keywords Atmospheric entry
Entry guidance(Sts)
Flight operations
Mars missions
Mars science laboratory
Postflight analysis
Real time operation
Spacecraft landing

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 54 - Astronomy & Astrophysics
84B - Extraterrestial Exploration
Corporate Author National Aeronautics and Space Administration, Houston, TX. Lyndon B. Johnson Space Center.
Document Type Journal article
Title Note N/A
NTIS Issue Number 1319
Contract Number N/A

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