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

Previous Articles     Next Articles

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

CHENYang,SUNHaibin,GUOLei   

  1. (SchoolofInstrumentationScience&OptoelectronicsEngineering,BeihangUniversity,Beijing100191)
  • Received:2013-05-24 Revised:2013-12-27 Online:2014-06-25 Published:2014-06-25

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