MIT engineers have developed the first fully 3D-printed electrospray engine, a breakthrough that could make satellite propulsion more accessible and cost-effective.
More Accessible and Cost-Effective Propulsion
This new technology enables the production of electrospray engines for propelling small satellites, such as CubeSats, using commercially available 3D printing materials. This approach reduces production costs and time compared to traditional methods relying on semiconductor cleanroom fabrication.
Operation and Performance
Electrospray engines generate thrust by applying an electric field to a conductive liquid, producing high-speed jets of tiny charged droplets. While each emitter generates a small thrust, multiple emitters are used in parallel for precise maneuvers. The MIT prototype demonstrated performance comparable to or better than existing electrospray engines.
A Modular Design and Performance Testing
The electrospray engine is made using two vat photopolymerization printing techniques, allowing for precise fabrication of components. Chemical experiments were also conducted to ensure material compatibility with the conductive propellant. The prototype outperformed traditional chemical rockets and existing electrospray thrusters, offering a simplified design to enhance efficiency while reducing weight and costs.
Picture by wirestock from Freepik.
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