Abstract: Accordingtothecharacteristicsofthemagneticfielddistributionintheearthspace,thepropulsiontechnologywithoutpropellantconsumptionwasproposedtomaintainorchangetheLEOspacecraftaltitude.Themagneticthrustdynamicswasmodeledbasedonthefundamentalmagnetics,themagnetismpropulsionprinciplewithcontinuousthrustbutnopropellantconsumptionwasclarified,andthetrackingcontrolstrategyofgeomagneticlineofforcefordecouplingthemagneticmomentwasproposed.Theflightenvelopeofmagnetismpropulsionandtypicalcalculationsfortheorbitaltitudemaintenanceorchangeswascarriedout.Theresultsshowthatthemagneticmomentofthespacecraftcanbeusedtomaintainorchangethespacecraftaltitudefrom600kmto1000kminlowearthorbit(LEO)whenitisupto10⁶Am².Furthermore,thetechnicalfeasibilityofobtaininghighmagneticmomentisbrieflyanalyzed.

Key words: Magnetismpropulsion, Nopropellantconsumptionpropulsion, Orbitalaltitudemaintenance, Orbitalaltitudeincrease, Spacepropulsion, Spacecraft