Rockets carry their own oxygen so they can function in space; pulse jets breathe air. And, unlike liquid-fueled rockets, the Beast’s engines have no moving parts. Once that suction is created ...

He’s flown quite a few modified R/C planes and has an electronic Engine Control Unit for his jets. One of his most impressive projects is the 100 pound thrust pulse jet that was later attached ...

with a 3D printed jet engine is that the engine gets hot and plastic likes to melt. [Integza] used lost PVA casting with plaster which worked well. There were still plastic parts melting ...