This means it is a reciprocating rotary engine. Yeah, weird stuff. The camshaft is also centrally located in the crankcase and still runs at 50-percent crankshaft speed but only actuates one valve ...

The CV-22 can perform missions that normally would require both fixed-wing and rotary-wing aircraft. The CV-22 takes off vertically and, once airborne, the nacelles (engine and prop-rotor group ...

fixed wing and rotary — and simplifies tracking global aircraft and engines. It is comprised of 70,000 aircraft and 110,000 engines in service from more than 400 military operators and includes ...