https://techcrunch.com/2020/10/19/lockheed-picks-relativitys-3d-printed-rocket-for-experimental-nasa-mission/

Relativity Space has bagged its first public government contract, and with a major defense contractor at that. The launch startup’s 3D-printed rockets are a great match for a particularly complex mission Lockheed is undertaking for NASA’s Tipping Point program.

The mission is a test of a dozen different cryogenic fluid management systems, including liquid hydrogen, which is a very difficult substance to work with indeed. The tests will take place on a single craft in orbit, which means it will be a particularly complicated one to design and accommodate.