Title:
System Level Impact of Landing Point Redesignation for High-Mass Mars Missions
System Level Impact of Landing Point Redesignation for High-Mass Mars Missions
Author(s)
Chua, Zarrin K.
Steinfeldt, Bradley A.
Kelly, Jenny R.
Clark, Ian G.
Steinfeldt, Bradley A.
Kelly, Jenny R.
Clark, Ian G.
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Abstract
This work presents a preliminary system level assessment of the payload mass change due to landing point
redesignation of representative high-mass Mars systems (systems with entry masses greater than 20 t). An
optimal propulsive descent guidance law which minimizes the control effort during the descent is used in order
to assess the range of feasible landing sites as well as the mass impact on the payload of the system. It is
shown that either increasing the entry mass or delaying the time of redesignating the landing site decreases
the payload capability of reaching the surface as well as reduces the number of reachable landing sites. In
addition, it is shown that the payloads associated with supersonic retropropulsion are more sensitive to the
landing point redesignation time than systems using inflatable aerodynamic decelerators.
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Date Issued
2011-09
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Text
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Paper
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