AnalysisofParachuteDeploymentDeviationforMarsEntryUnderInitialConditionErrors

doi:10.3780/j.issn.1000-758X.2014.03.011

Chinese Space Science and Technology ›› 2014, Vol. 34 ›› Issue (3): 73-78.doi: 10.3780/j.issn.1000-758X.2014.03.011

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AnalysisofParachuteDeploymentDeviationforMarsEntryUnderInitialConditionErrors

CHENYang，SUNHaibin，GUOLei

（SchoolofInstrumentationScience&OptoelectronicsEngineering,BeihangUniversity,Beijing100191）

Received:2013-05-24 Revised:2013-12-27 Published:2014-06-25 Online:2014-06-25

Abstract

Abstract: WiththedevelopmentoftheMarsexploremission,theproblemofpreciselandingisnowconsideredtobeanessentialchallenge.ForaMarslandingmission,theinitialconditionerrorswouldresultinthedeviationofparachutedeployment，sothelandingpointerrorswouldbelarger.TheMarsatmosphericentryphasewasintroduced,andthedynamicequationofthevehicleandthecorrespondingmathematicmodelswereproposed.A1000-runMonteCarlostudywasperformedtoanalyzetheparachutedeploymentdeviationundertheinitialconditionerrors.Thestudyshowsthatthedownrangeerroris20~40km, andthecrossrangeerroris5~10km.Somesuggestionsweregivenfortheparachutedeploymentprecision,andsomeentryguidancealgorithmswerealsointroduced.

Key words: Mars, Atmosphericentry, Parachutedeployment, Precisionanalysis, Deepspaceexploration

CHEN Yang, SUN Hai-Bin, GUO Lei. AnalysisofParachuteDeploymentDeviationforMarsEntryUnderInitialConditionErrors[J]. Chinese Space Science and Technology, 2014, 34(3): 73-78.

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AnalysisofParachuteDeploymentDeviationforMarsEntryUnderInitialConditionErrors

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