When a rocket motor using solid propellant is lit it continues to burn until all of the fuel is consumed. That is not the case with this design ... to the oxygen tank. There is a nozzle on ...

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 ...

It uses a rocket engine that runs on hydrazine fuel ... The Hummingbird bus was also the fuel tank, and it had additional slots for CubeSat components. These components could be used for further ...