You. So what if it were possible to 3D print a hypersonic scramjet engine? Let's dive in. Aerospace and defense contractor Lockheed Martin metal 3D printer manufacturer of Velo Three D, and aerospace part inspection company Vibrant have collaborated with the US. Department of Defense Lift Institute to assess the of 3D printing hypersonic ramjet engines. Now, this is a concept that's been not only on the drawing board, but has been in the labs, to use a loose term, for many years, especially in aviation