Method of operating a satellite for end-of-life maneuvers

摘要

A method for operating a satellite ( 10, 34 ) so that a predetermined amount of propellant is left to perform end-of-life maneuvers is provided. A first pressure differential is established between a first propellant tank ( 74 ) and a second propellant tank ( 76 ) by pressurizing the first tank ( 76 ) with a pressurant. Propellant is transferred from the first tank ( 74 ) to the second tank ( 76 ). Using precise control during transfer the amount of propellant in the tanks may be determined. The second tank is used for orbit maintenance. The first tank is used for end-of-life maneuvers. Propellant may be transferred between the tanks using a latching process so that a predetermined amount of propellant may be transferred from a non-empty tank to a full tank.