Scientists at the U.S. Naval Research Laboratory are developing the next generation of solid-fuel ramjet (SFRJ) propulsion, ...

Your car's engine needs a very specific diet of air and fuel to do its job, and it's the fuel pressure regulator's (FPR) job to feed it the right amount. The gadget is relatively tiny and can fit in ...

Fuel economy testing is notoriously difficult to do properly. Naturally, if you plan to invest some time and energy evaluating a fuel-saving device, you hope to get results you can trust. But can you ...