Mars aerocapture using continuous roll techniques

Details Mars aerocapture using continuous roll techniques Mars aerocapture using continuous roll techniques

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992asdy.conf.1859w&link_type=abstract

IN: Astrodynamics 1991; Proceedings of the AAS/AIAA Astrodynamics Conference, Durango, CO, Aug. 19-22, 1991. Pt. 3 (A92-43251 18

Computer Science

Performance

Aerobraking, Aerocapture, Atmospheric Entry, Lateral Control, Manned Mars Missions, Mars Sample Return Missions, Adaptive Control, Descent Trajectories, Feedback Control, Hypersonic Flight, Lift Drag Ratio, Predictor-Corrector Methods, Space Shuttles, Spacecraft Control

Scientific paper

Capture of a Mars vehicle into a closed orbit can benefit greatly from the use of aerodynamic deceleration (Aerocapture). Because of the unknowns associated with the Mars environment, the use of adaptive control techniques is critical to the successful outcome. This paper will describe work done over several years at assessing the performance of a continuous roll control technique coupled with a closed loop predictor corrector guidance system. The implementation of this system is called CLAAS (Closed Loop AeroAssist Simulation). This system has been tested against a variety of dispersions including a variety of atmospheric models, atmospheric shear waves, vehicle variations, and navigation errors. Results will be shown for a two mission applications, a representative manned Mars vehicle and an unmanned Mars Rover Sample Return (MRSR) system. Finally, a few observations on technical challenges for aerobraking a Mars vehicle are included in the conclusions.

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