These engines generate 8 or 10 times the thrust of the production models of my generation, and are considerably more efficient because ever higher proportions of the intake air are sent directly to the exhaust by the front fan, increasing the volume of gases that generate the thrust, and lowering ts average velocity.

The Trent 1000 will power the Boeing 787 Dreamliner, the first delivery to a customer being schedled for later this year. After that wil come the Trent XWB, due in service 2013, and 16% more fuel efficient than the Trent 700.