The radial engine may have fallen far out of favor for internal combustion development over time, but some military vehicles got impressive results from them.

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Type: Reciprocating, 18 cylinders, ...

CHICAGO, Dec. 13, 2021 /PRNewswire/ -- United today became the largest airline to invest in zero-emission, hydrogen-electric engines for regional aircraft, the latest move toward achieving its goal to ...