We are fascinated by the hybrid rocket engine which [Ben Krasnow] built and tested in his shop. It is actually using a hollow cylinder of acrylic as the fuel, with gaseous oxygen as an oxidizer.

Most any rocket engine you’d find on a spacecraft – save for solid or hybrid rockets – use an ... will release the CAD source so we can make our own. EDIT: [RM] tells me his engine cost ...

Kristin, a contributor to Celsias.com has done a bit of research online, as well as some real-world testing to come up with what she is calling the "Homemade Hybrid ... the engine to save the ...

HICKAM will design and manufacture a modular, compact, and portable testing platform for characterizing hybrid rocket engines. The team will also manufacture two 300 lbf hybrid rocket motors to prove ...