The Rolls-Royce Trent 1000 is a turbofan engine, developed from earlier Trent series engines. The Trent 1000 powered the Boeing 787 Dreamliner on its maiden flight, and on its first commercial flight.
The teeth like formations on the engines, called chevrons help in noise reduction.
The aircraft here is Boeing's N787BX kept on static display at the Dubai Airshow 2011.
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