Akiyuki, who creates a huge ball rolling and robot arm using Lego blocks, has released a movie of a model of a rotary engine made with Lego. You can not only reproduce the shape, but also see how the ...

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 ...

Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...