SIA3D: 3D printing to advance atmospheric propulsion

Kreios Space is leading the SIA3D project (3D Printing Air Injection System for ABEP), an initiative aimed at developing and validating a new gas injection system integrated into our atmospheric-breathing electric propulsion technology.

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Kreios Space’s ABEP system is designed to operate in very low Earth orbits, known as VLEO, using residual particles in the atmosphere as propellant. However, atmospheric density can vary and may not always be sufficient to ensure stable engine ignition. The system developed at SIA3D will act as a backup mechanism, injecting gas in a controlled manner when necessary.

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The component will be manufactured using advanced 3D printing technologies, which enable the integration of internal channels and complex geometries into lightweight, compact parts. The project involves the development of four prototypes, primarily in aluminium and titanium alloys.

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The prototypes will be tested in Kreios Space’s vacuum chamber, under conditions representative of VLEO. In addition, CACTI at the University of Vigo will analyse the materials’ resistance to atomic oxygen, one of the main agents of degradation in these orbits.

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SIA3D brings together the expertise of Kreios Space, CACTI–University of Vigo and the Austrian company AdditiveXperts, combining space propulsion, materials science and additive manufacturing.

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The results will help to reduce technological risks and pave the way for the future in-orbit demonstration of Kreios Space’s ABEP system, paving the way for more efficient and sustainable satellites capable of operating for long periods in VLEO.
The project will run for 24 months and is being carried out within the framework of VInnovate Galicia, with the support of the Galician Innovation Agency.

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Funded by the Galician Innovation Agency of the Xunta de Galicia and co-financed by the European Union.

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