and even hybrid rocket engines are becoming passé. We’ve never seen a liquid-fuel rocket build before, so that’s what this roundup evolved into. First up is [Robert Watzlavick], who has been ...

[Sam Rogers] and colleagues at [AX Technologies] have been testing and developing a small liquid ... This engine intended to be used as a torch igniter for a much larger rocket engine. Fuel ...

The Stoke Space rocket engine test lights up a vertical test stand in Moses Lake, Wash. (Stoke Space Photo) Stoke ...

Because it is difficult for the fuel and oxidizer to be mixed intimately (being different states of matter), hybrid rockets tend to fail more benignly than liquids or solids. Like liquid rocket ...

One year down the line, the Indian startup is the first private company in India to have successfully launched a homegrown rocket engine ... to stay liquid — like liquid natural gas (LNG ...