The first rotary engines were primarily used for aircraft during World War I, but the design was abandoned due to flaws and ...

Rob Dahm, notorious rotary-powered car builder, has firmly jumped into the deep end of the pool with his latest project: The ...

as well as into the air intake. This oil is eventually burned, causing increased carbon and emissions over the life of the engines. Overhaul interval: Rotary engines in general don’t last as ...

Lockheed’s Flying CARR made this concept a reality.” The notion of a fixed-wing airplane that can turn into a rotary-wing ...

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The issue, as it has pretty much always been, is environmental. While the Wankel rotary engine does indeed make a lot of power in a small, lightweight package, it does so while burning lots of ...

The combination of Mazda CEO's rotary R&D announcement plus the gorgeous rotary concept add up to a new 350 hp-plus sports car in the pipeline.

It might be even less subtle with an unusual engine in its belly, though — and it seems at least one owner has done just that. The resulting creation is a beastly rotary-powered R5 Turbo ...

Aircraft maintenance firm Dynamic Aviation is making headway in restoring the first ever airplane to be called Air Force One.