I am doing North-South manuever for GEO satellite. My purpose is to reduce the inclination. My initial inclination is 0.07 deg, and my target inclination is 0.0002 deg. I have tried the maneuver in GMAT. I tried to do maneuver in ascending node and descending node. Both of them seems work. But I still confused, should I do the maneuver in the ascending node or descending node? Thank you.
Although it has been already answered briefly, I would like to add some extra information (increasing the inclination) about on the N/S maneuvers.
Well the location of the thruster firing is highly depends on the maneuver type. If the maneuver is:
- North, then you should fire your thrusters while the satellite passes from ascending node in order to do more efficient maneuver. Since satellite already starts to ascending, less fuel will be used.
If it is:
- South, then you should fire your thrusters while the satellite passes from descending node in order to do more efficient maneuver. Since satellite already starts to descending, less fuel will be used.
Basically with this approach, you will not waste your fuel and you let part of the job to do by orbital mechanics (celestial mechanics).