Precision landing at Mars using discrete-event drag modulation

Zachary R. Putnam, Robert D. Braun

Research output: Contribution to journalArticle

Abstract

An entry, descent, and landing architecture capable of achieving Mars Science Laboratory-class landed accuracy (within 10 km of target) while delivering a Mars Exploration Rover-class payload to the surface of Mars is presented. The architecture consists of a Mars Exploration Rover-class aeroshell with a rigid, annular drag skirt. Maximum vehicle diameter, including drag skirt, is limited to be compatible with current launch-vehicle fairings. A single dragskirt jettison event is used to control range during entry. Three-degree-of-freedom trajectory simulation is used in conjunction with Monte Carlo techniques to assess the flight performance of the proposed architecture. Results indicate that landed accuracy is competitive with preflight Mars Science Laboratory estimates, and peak heat rate and integrated heat load are significantly reduced relative to the Mars Exploration Rover entry system. Modeling parachute descent within the onboard guidance algorithm is found to remove range error bias present at touchdown; the addition of a range-based parachute deploy trigger is found to significantly improve landed accuracy.

Original languageEnglish (US)
Pages (from-to)128-138
Number of pages11
JournalJournal of Spacecraft and Rockets
Volume51
Issue number1
DOIs
StatePublished - Jan 1 2014
Externally publishedYes

Fingerprint

Mars exploration
Parachutes
landing
Landing
entry
mars
skirts
drag
Drag
Mars
Modulation
modulation
Flight dynamics
parachute descent
Launch vehicles
aeroshells
Thermal load
touchdown
fairings
parachutes

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science

Cite this

Precision landing at Mars using discrete-event drag modulation. / Putnam, Zachary R.; Braun, Robert D.

In: Journal of Spacecraft and Rockets, Vol. 51, No. 1, 01.01.2014, p. 128-138.

Research output: Contribution to journalArticle

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