With a simple motion, a jack-in-the-box-like spring designed at NASA’s Jet Propulsion Laboratory showed the potential of additive manufacturing, also known as 3D printing, to cut costs and complexity for futuristic space antennas. Called JPL Additive Compliant Canister (JACC), the spring deployed on the small commercial spacecraft Proteus Space’s Mercury One on Feb. 3, 2026. An onboard camera captured this video of the spring popping out of its container as the spacecraft passed over the Pacific Ocean in low Earth orbit.
Figure A is a still image of JACC after deployment, taken above Antarctica.
JACC is one of two JPL payloads on the spacecraft that are demonstrating new technologies designed to take up reduced volume while precisely deploying antennas on future orbiters. JACC’s success demonstrates that 3D-printed mechanisms can be built faster, cheaper, and with less complexity than traditionally fabricated space hardware.
Printed out of titanium, JACC uses three times fewer parts than similar structures: Combined into a single part is a hinge, panel, compression spring, and two torsion springs. Weighing just over 1 pound (498 grams), it is about 4 inches (10 centimeters) on each sid …