The traditional single-stage electric propulsion systems for small satellites, such as CubeSats, face challenges in terms of thrust, specific impulse, and efficiency. Typically operated at an optimal point for specific tasks, these systems require different thrusters for different maneuvers, making them less versatile. Researchers at George Washington University have developed a two-stage micro-propulsion system, addressing the limitations of single-stage propulsion systems by offering a design where the ionization and acceleration stages are separate, allowing for more precise control and efficient functioning of each stage.
The first stage of this system is dedicated to efficient plasma generation, while the second stage focuses on the effective acceleration of ions. This dual-stage approach significantly enhances the system's performance, facilitating a high thrust-to-power ratio for crucial tasks like orbital changes. It also ensures a high specific impulse for extended missions, including station-keeping and interplanetary travel. The adaptability of this system marks a substantial advancement in satellite propulsion technology, especially for smaller satellites. It allows for a more efficient use of onboard resources, broadening the range of potential mission capabilities within a single propulsion system.
Advantages:
- Enhanced Efficiency by separation of ionization and acceleration.
- High Thrust-to-Power Ratio.
- Suitable for extended missions like station-keeping and interplanetary travel.
Applications:
- Small Satellite Propulsion specifically for CubeSats and other small-scale satellites.
- Orbital Maneuvers.
- Long-duration Space Missions
