Journal article Open Access

# GTOC 9: Results from University of Trento (team ELFMAN)

Bertolazzi, Enrico; Biral, Francesco; Ragni, Matteo

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
<dc:creator>Bertolazzi, Enrico</dc:creator>
<dc:creator>Biral, Francesco</dc:creator>
<dc:creator>Ragni, Matteo</dc:creator>
<dc:date>2018-01-09</dc:date>
<dc:description>The GTOC9 competition requires the design of a sequence of missions to remove debris from the LEO orbit. A mission is a sequence of transfer of the spacecraft from one debris to another. Both missions and transfer must fulfill a set of constraints. The work presents the procedures to develop a solution for the GTOC9 problem (i.e the mission sequence) that does not violate constraints.The solution is obtained through an evolutionary algorithm that combines pre-computed basic missions stored in a database. The main objective of the algorithm is to minimize the overall cost of the solution, in order to maximize the competition
score. The database of pre-computed missions is derived by connecting transfers stored in a database of transfers, through a combinatorial approach that considers the problem constraints. The database of transfer is formulated through
the solution of a constrained minimization problem upon the control action (the magnitude of the overall impulsive velocity changes $$\Delta$$V ). Only a subset of all possible transfers (selected on the basis of acceptable $$\Delta$$ V ), enters in the database.</dc:description>
<dc:identifier>https://zenodo.org/record/1139258</dc:identifier>
<dc:identifier>10.5281/zenodo.1139258</dc:identifier>
<dc:identifier>oai:zenodo.org:1139258</dc:identifier>
<dc:relation>doi:10.5281/zenodo.1139257</dc:relation>
<dc:relation>url:https://zenodo.org/communities/acta-futura</dc:relation>
<dc:relation>url:https://zenodo.org/communities/esa-act</dc:relation>
<dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
<dc:source>Acta Futura 11 79-90</dc:source>
<dc:title>GTOC 9: Results from University of Trento (team ELFMAN)</dc:title>
<dc:type>info:eu-repo/semantics/article</dc:type>
<dc:type>publication-article</dc:type>
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