While a lot of automotive engines have one spark plug per cylinder, the HEMI V8 might have two per cylinder. What is the science behind that?

Click to open image viewer. With a thrust of 25 tons, the V-2 engine was the first large liquid-fuel rocket engine in the world and powered the world’s first ballistic missile, the German V-2 of World ...

A Brooklyn startup called Launcher has made its rocket engine’s entire combustion chamber in one 3D print. Launcher received $1.5m in Air Force funding during a call for launch technology—the Air ...

Zero 2 Infinity's new 3D-printed engine combustion chamber for Bloostar, a balloon-assisted rocket the company is developing. Credit: Zero 2 Infinity. Updated March 24 at 11:15 a.m. Eastern.

HOT ROD’s archives are chock-full of brilliant tech reports that truly are timeless. This one, drafted by Jim McFarland for our February 1972 issue, provides an extensive look at how important airflow ...

The U.S. Air Force Research Laboratory achieved a significant propulsion milestone when a Draper rocket engine reached supersonic flight conditions during a controlled test. The trial, conducted at ...

The turbocharger is more popular than ever, appearing on the Ford Mustang, the Dodge Charger, and the Chevrolet Corvette.

A better mousetrap? Even now, as electrification seems poised to end the internal combustion engine’s long run as the transportation motivator of choice, enterprising tinkerers continue to propose ...

Contemplating the advantages of the pushrod-actuated overhead valve engine design in what appears to be the twilight of internal combustion might sound as anachronistic as a quick look at the value of ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. With a nominal thrust of 25 metric ...