Tuesday 25 February 2025
A team of researchers has made significant progress in developing a new technique for inspecting and measuring the geometry of grids used in electrostatic ion thrusters, which could lead to more accurate predictions of wear and tear on these critical components.
The grids are responsible for extracting ions from propellant gases and accelerating them to high speeds, making them an essential part of many spacecraft propulsion systems. However, due to the harsh operating conditions, these grids can suffer from erosion and degradation over time, which can affect the thruster’s performance and lifespan.
To address this issue, researchers have turned to computed tomography (CT) scans, which use X-rays to create detailed 3D images of the grid geometry. The technique has shown promise in recent years, but it has also been plagued by artifacts and distortions that can make it difficult to accurately measure the grids’ dimensions.
In a new study, researchers have developed a novel approach to CT scanning that involves combining multiple scans taken at different X-ray energies. This allows them to reduce the impact of artifacts and produce more accurate images of the grid geometry.
The team used a commercial CT scanner to scan several grids made from different materials, including graphite and molybdenum. They then developed a custom software program to combine the multiple scans and generate detailed 3D models of the grids’ geometry.
The results were impressive: the team was able to achieve spatial resolutions of up to 30 micrometers, which is significantly better than previous attempts. The images also showed much less distortion and artifacting, making it easier to accurately measure the grids’ dimensions.
The researchers believe that their technique could be used to improve the design and testing of electrostatic ion thrusters, as well as to monitor the performance of these components over time. This could help to extend the lifespan of spacecraft and reduce the risk of mission failure due to thruster malfunctions.
In addition, the team’s approach could be applied to other fields where CT scanning is used, such as medicine or materials science. The technique has the potential to improve the accuracy and resolution of CT scans in a wide range of applications.
Overall, this research represents an important step forward in the development of CT scanning technology for inspecting and measuring grid geometry. With further refinement and testing, it could become a valuable tool for researchers and engineers working on electrostatic ion thrusters and other complex systems.
Cite this article: “Improving CT Scanning Technology for Electrostatic Ion Thruster Grid Inspection”, The Science Archive, 2025.
Electrostatic Ion Thrusters, Grid Geometry, Computed Tomography, Ct Scanning, X-Rays, Artifacts, Distortions, Spatial Resolution, Thruster Design, Materials Science.
