3D Printed Payload Flies on Sounding Rocket, Proving Space Hardware Agility

A significant advancement in space hardware development was showcased by Sebastian Feles, technical lead of the Aeromedical FabLab at the German Aerospace Centre (DLR). During a recent online conference, Feles presented a fully 3D printed payload that was built using compostable filament on a standard Prusa Research desktop 3D printer. This payload was flown aboard a sounding rocket, subjected to real space conditions, and returned intact without the need for a specialized cleanroom or laboratory.

Feles emphasized that this achievement represents a tangible proof of concept, moving beyond theoretical promises to demonstrate a new method for building, testing, and flying space hardware. The development addresses the critical challenges of studying biological systems in space, where conditions like microgravity and radiation significantly differ from Earth. For long-term space missions, understanding and mitigating these risks to living organisms is paramount.

The agility of 3D printing is crucial for biological research in space, where experimental parameters can evolve rapidly. Traditional hardware development cycles, which can take years, may become outdated before a mission launches. The Mapheus program, as described by Feles, is designed to overcome this by allowing for deregulated parameters and rapid iteration, enabling biology and engineering to develop in tandem.

This approach proved invaluable when the project faced unexpected constraints. For instance, a shift to a two-unit CubeSat slot required the MiniFix syringe-based biological fixation system to be redesigned from four syringes to two. Later, when a shared module with variable unit slots was utilized, the mounting system and internal pressure chamber design were completely reconfigured. The program also accommodated a request to test duckweed as a potential Mars food source under microgravity, necessitating the integration of internal lighting.

Furthermore, the modular and printed nature of the hardware allows for immediate repairs in the field, even under harsh conditions. Feles recounted instances where components failed upon arrival at the launch site, a phenomenon he termed the 'Kiruna effect.' However, with basic tools and readily available printed parts, the team could perform on-site repairs, ensuring the continued operation of the experiments. The system also allows for late access, enabling biological samples to be loaded just 45 minutes before liftoff, a critical advantage for preserving cellular integrity and ensuring data reliability.