While Rob Dahm’s garage is no stranger to monstrous rotary engines, including four-rotor units cranking out more than 1,000 horsepower, this one is mind-bending. Here we have a massive, ...

Wankel engines first saw use in production cars as early as 1964 -- and not even in a Mazda, but rather in an NSU. That little single-rotor powerplant quickly evolved into the more typical two-rotor ...

If you look at aircraft from the Second World War or earlier, you'll notice that many of them have engines with large frontal areas and cylinders arranged about the propeller crankshaft. This a radial ...

Click to open image viewer. CC0 Usage Conditions ApplyClick for more information. In the early 1930s, the Navy supported Wright development of two new liquid-cooled engines, the XR-2120 (H-2120) and ...

During World War II the radial engine was popular, and it was used in many fighter and bomber aircraft. Manufacturers in aviation used them because the engines deliver a ton of power for their size, ...

The 20th century was the age of the internal combustion engine. The fruits of industrial progress produced power plants tasked with everything from running generators to powering warplanes. The First ...

As the automotive propulsion industry shifts toward electrification, the last-of-breed combustion engines are a stultifyingly similar bunch, focused around the same CAD-optimized 500cc cylinder ...

It may seem like a horse-drawn Zeppelin, but Astro Mechanica seems to be all-in on its revolutionary hybrid-electric supersonic jet engine as it partnered with UK-based engineering firm Helix to add ...