ATSpace is designing and manufacturing the world's best and first commercial 3D printed hybrid rocket engine combustion chamber. Printing in a single piece reduces costs and enables the highest-performance regenerative cooling design. The Lelien engine leverages 3D printing technology with high-performance copper alloy and uses ultra safe and lightweight hybrid propellant to get to orbit — allowing ATSpace to deliver more satellite cargo per rocket and as a result, offer a more cost effective solution.