Space 3D printing saves costs but safety is the challenge

Published on 2026-07-02 | Translated from Spanish

Northrop Grumman has manufactured a fuel tank for spacecraft using 3D printing in a single piece. The technique reduces costs by 30% and cuts production time in half. However, certifying that the single piece can withstand space conditions remains a major technical challenge.

Large-format 3D printer depositing molten metal layer on a single-piece spherical fuel tank, printing nozzle in action while concentric layers solidify, engineer with tablet monitoring real-time structural integrity data, extreme vibration and thermal vacuum simulation showing stresses on the metal surface, X-ray inspection tools scanning invisible joints, cinematic photorealistic style, blue and orange industrial lighting, polished metal texture, dark clean room background with robotic arms, aerospace engineering technical visualization

The dilemma of certifying a single piece 🔍

Current inspections do not effectively detect potential internal flaws in components manufactured as a single piece. Without welded joints, traditional quality control methods lose effectiveness. Engineers are seeking new techniques, such as advanced computed tomography or non-destructive stress testing, to validate that the tank will not fail in orbit. Innovation reduces costs, but reliability must be proven with solid data.

A tank that comes standard (and is not standard) 🚀

Printing a fuel tank like printing a sheet of paper sounds futuristic, but then comes the hard part: making sure it doesn't turn into a source of space confetti. While engineers sweat to certify the part, accountants are already rubbing their hands together over the 30% savings. At least, if it fails, it will be a prettier and cheaper failure than previous ones.