关键词: 进入减速, 盘缝带伞, 跨声速, 风洞试验, 火星着陆器

Abstract: IntheMarsentrydeceleratelandingprogram，theparachuteisakeyinstrumentoftheaerodynamicdeceleratorsystem.BecauseoftheparticularityoftheMarsatmosphere，theparachuteusedfortheMarsmissondeploysunderthesupersonic，lowdensity，lowdynamicpressureconditions.SotheconstructionandsizingoftheMarsparachuteismuchimportant.TheMarsparachutetechnologywasinvestigatedandanalyzedbyfourtypesofparachute，consideringthediskbandarearatioandporosityofthecanopymaterial.Todeterminethedragandstaticstabilityofthevarioustypesofdisk-gap-bandparachutemodel，theMarsparachutetransoniccharacteristicstestinChinawasfirstlyconducted.Thefronttrussandwindtunnelbalancewasusedtomeasuretheaxisforceontheparachutemodel，andthephotographywasusedtoobservetheangleofattackoftheparachute.Thetestresultsshowthat，thetransonicdragcoefficientofthedisk-gap-bandparachuteaccordswiththetheoreticaloneandcansatisfytheMarsmissionrequirements.Itisalsoobservedthatthereductionofstabilityofthedisk-gap-bandparachuteisaccompaniedbytheincreasingofthedragperformance.

Key words: Entrydecelerate, Disk-gap-bandparachute, Transonic, Windtunneltests, Marslander