specifically can you 3D print the rocket grain itself? By using the resin as a fuel and mixing in a potent oxidiser (ammonium perchlorate specifically – thanks for the tip NASA!) he has some ...
Rocket thrusters powered by the hydrogen and oxygen in water do exist, and while NASA succeeded with using this kind of propulsion system to launch their PTD-1 CubeSat in 2021, water fuel has not ...
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