Physics
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978kosis..16..670s&link_type=abstract
Kosmicheskie Issledovaniia, vol. 16, Sept.-Oct. 1978, p. 670-674. In Russian.
Physics
Atmospheric Entry, Lift Drag Ratio, Mars Atmosphere, Optimal Control, Soft Landing, Trajectory Optimization, Aerodynamic Brakes, Atmospheric Models, Descent Trajectories, Game Theory, Minimax Technique
Scientific paper
In the present paper, the soft-landing problem in the worst Martian atmosphere is formulated within the framework of game theory, assuming that the planet and the atmosphere are fixed and that the vertical downward motion is controlled by varying the L/D ratio by way of turning the craft about the velocity vector by an angle of bank. A minimax technique for determining the minimum velocity at a given height is proposed, along with an optimal program for controlling the L/D ratio. The control requirements along the touch-down portion of the trajectory are established.
Krutov Alexander V.
Semenov Vladimir
Zotov V. E.
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