If you’ve ever built a model rocket, you’ll know there’s not ... Extra points awarded if you add in a parachute, but strictly speaking, even that’s a luxury. Stick an Estes motor in ...

Stuffed with sensors and entirely 3D printed, Cortex 1 flew well, but the parachute failed to deploy mainly due to an imperfectly bonded assembly. The hatch was recovered, but the rocket was lost.