It's the stuff of fantasy: jet fuel making a dieselvehicle tak e off like, well, a jet. But what really happens if you put jet fuel in your diesel's tank?

Liquid-fuelled rocket engine design has largely followed a simple template since the development of the German V-2 rocket in the middle of World War 2. Propellant and oxidizer are mixed in a ...

It is a hybrid between a conventional jet engine, and a rocket system powered by liquid oxygen. The system will be reusable, much like an aeroplane, with no need to jettison expensive fuel tanks ...