Space MIAD Practice Test

In which orbital regime is electric propulsion most commonly utilized for satellite maneuvering?

1. LEO

2. MEO

3. GEO

4. HEO

The correct answer is: GEO

Electric propulsion is most commonly utilized for satellite maneuvering in the geosynchronous orbital regime (GEO) due to several key factors. GEO is characterized by a stable position over the same point on Earth, which is crucial for communication satellites and other applications requiring consistent coverage. Electric propulsion systems are particularly advantageous in GEO because they provide a more efficient means of maneuvering compared to traditional chemical propulsion. This efficiency is important for maintaining the orbit of satellites, as these vehicles need to perform regular adjustments to counteract gravitational perturbations, atmospheric drag, and other forces. Additionally, GEO satellites typically have longer operational lives, making the extended fuel efficiency of electric propulsion a critical advantage. Electric propulsion systems consume less propellant, enabling satellites to conserve resources and extend their operational lifespan. This is important for mission sustainability and economic efficiency in GEO, where the costs of launching, maintaining, and operating satellites are high. In contrast, other orbital regimes such as LEO (Low Earth Orbit) and MEO (Medium Earth Orbit) may prioritize different types of maneuvers and can involve varying mission profiles that might not leverage the advantages of electric propulsion to the same extent as GEO missions.