Mazda has never been scared to try something different, and its 1990s luxury coupe embodies this approach as well as any ...

We look at why Mazda introduced the three-rotor 20B Wankel rotary engine, and why it only ever saw service in the Cosmo coupe ...

The traditional piston engine has garnered the vast majority of attention and application in the internal combustion age, but there was another: the Wankel rotary engine. German engineer Felix Wankel ...

For CFM International, the decision whether to stay with a turbofan or move to an open-rotor engine to power the next generation of single-aisle airliners will come sooner rather than later. The ...

How many rotors are too many? While most Mazda engine builders and tuners wouldn’t dare to build an engine with more than four rotors, a company out of New Zealand has built a six-rotor engine for the ...

Rob Dahm, notorious rotary-powered car builder, has firmly jumped into the deep end of the pool with his latest project: The world's only 15.7-liter, tri-turbo Y12 rotary engine. If that doesn't make ...

Mazda's famous rotary engine finally made its big return last year, but it wasn't under the hood of a replacement for the RX-8. In fact, it wasn't even in a performance car at all. Instead, it served ...

Engine rotor-overspeed certification standards have been amended by FAA. The new rule, which goes into effect Sept. 16, establishes uniform rotor-overspeed design and test requirements for aircraft ...