1 2 3 Diamandis, Peter (26 tháng 6 năm 2014). “Update from Planetary Resources”. Peter H. Diamandis channel. Planetary Resources. Truy cập ngày 30 tháng 7 năm 2014.
1 2 “SpaceX Launches 3D-Printed Part to Space, Creates Printed Engine Chamber for Crewed Spaceflight”. SpaceX. Truy cập ngày 1 tháng 8 năm 2014. Compared with a traditionally cast part, a printed valve body has superior strength, ductility, and fracture resistance, with a lower variability in materials properties. The MOV body was printed in less than two days, compared with a typical castings cycle measured in months. The valve’s extensive test program – including a rigorous series of engine firings, component level qualification testing and materials testing – has since qualified the printed MOV body to fly interchangeably with cast parts on all Falcon 9 flights going forward.
