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Propulsion System and Second Stage Structural Loads Interaction Test Platform at SSC E3-C2

Completed Technology Project

Project Introduction

Propulsion System and Second Stage Structural Loads Interaction Test Platform at SSC E3-C2

Relativity has a collaborative partnership with NASA’s STMD and SSC to further the development of our innovative orbital launch vehicle additive manufacturing technologies through an investigation of 3D printed pressure-fed propulsion system and second stage structural vibration and acoustic load interactions in hotfire testing at SSC test stand E3-C2. This work significantly builds upon existing 3D printed igniter and engine hotfire testing at E3-C2 conducted through Spring 2017 by collecting the first-ever TRL 4 test data on large scale aluminum printed structures.

Stennis will aid Relativity in making E3-C2 test facility upgrades including installing a new thrust structure, upgrading facility fluid components, and rerouting fluid propellant lines to the test cell. Relativity will additively manufacture an approximately 6’ diameter by 12’ tall representative second stage tank structure using our proprietary printing process, as well as printing our 13,000 lbf Aeon 1 LOx/LNG engine using the Powder Bed Laser Melting process.

By partnering with Relativity, NASA will be able to permanently upgrade their existing test stand at E3-C2, which also helps facilitate Relativity continuing to develop orbital launcher technologies. Our technology is readily applicable to both commercial and government products that desire quick iteration and innovative cost saving opportunities, and could help support manufacturing and eventual human exploration on the Moon, Mars, and other planets with in-situ resource utilization.

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