The mind-bending world of birotary engines - a hybrid of piston and rotary technology that could revolutionize aviation. But ...

You'd think measuring an engine's displacement would be simple, but there's a long history of trying to figure out how to ...

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both ...