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.

Among the investors was André-Hubert Roussel, former CEO of ArianeGroup, who oversaw the development of Europe’s only ...

Most any rocket engine you’d find on a spacecraft – save for solid or hybrid rockets – use an engine system that’s fairly complex. Because of the intense heat, the fuel is circulated ...

China says it fired up the world’s largest single-segment solid-fuel rocket engine for the first time, at a ground testing facility in the country’s northwest on Tuesday. The rocket’s 3.5 ...