Redwire to Explore the Feasibility of 3D Printing With Lunar Dust on the ISS

On August 10th, Northrop Grumman plans to launch its 16th commerical resupply service mission. As the name suggests, the Cygnus spacecraft will be carrying crew supplies, scientific research, and hardware to the orbiting laboratory. As part of this mission, supplies will be sent will be scientific experiments to add to the various studies conducted in the past 20 years at the orbiting lab. One of these will be the Redwire Regolith Print (RRP) study, which will involve 3D printing loose rock and soil (regolith) on the international space station (ISS) to determine whether it can be used for on-demand construction of habitats.

According to Michael Snyder, chief technology officer at Redwire, this will be the first time that the Additive Manufacturing Facilitiy (AMF) in the ISS will be used to test a manufacturing technique itself and not just a part. As part of the experiment, a new build plate and extrusion will be installed in the manufacturing facility and researchers will be printing specimens, notably plates, which will be ultimately be brought down to Earth for testing. The goal is to ultimately figure out if there is a difference between 0g and 1g, helping them to understand if it will be necessary to incorporate design tolerances.

The Redwire Regolith Print (RRP) facility suite including the RRP print heads, plates and lunar regolith simulant feedstock. (Photo Credits: Redwire Space)

Testing for the RRP study is the culmination of years of work including the centennial 3D printed habitat challenge to try to find a solution to create habitats on the Moon and Mars. Focus has been on using soil or regolith (loose unconsolidated rock and dust that you can find on Earth, the Moon and Mars) not just because it is more sustainable but also because it will cut down on the amount of supplies needed to bring to the Moon or Mars, important as it could reduce both waste and costs on future space missions. If the experiments are successful, then scientists can consider using resources already available on planetary bodies as the raw materials for on-demand construction of housing and other structures.