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[[Terry Craig, Senior Staff Engineer Peebles Test Operation] Here at GE we consider]
[the GE90 the big brother of the all new GEnx]
[engine, since the GE90 was the predecessor. [GE90, GEnx]]
[The large size and the use of composite materials make both of these engines]
[[♪ music ♪] The GE90 is the big brother.]
[It entered service in 1995 and is used to power the Boeing 777.]
[This is the largest and most powerful aircraft engine GE has ever built. ]
[This is the GE9115B and it's currently]
[in the Guinness Book of World Records.]
[It generated 127,900 pounds of thrust]
[during testing here at Peeble's Test Operation in 2003.]
[To generate these high levels of thrust, the GE90's huge]
[fan blades move massive amounts of air through the engine.]
[At takeoff power, the GE90 will use about]
[3600 pounds of air a second. ]
[To put that in perspective, that would suck all the air out of ]
[Madison Square Garden in just seconds. ]
[Not only is the GE90 the largest engine GE has ever produced, ]
[In the past, aircraft engines have typically used metal titanium blades. ]
[One of the keys to success of the GE90 is]
[the use of composite carbon fiber fan blades. ]
[This not only allows the fan blades to be lighter, but other engine components, as well. ]
[A lighter engine results in better fuel efficiency. ]
[Not only are these the lightest planes GE]
[has ever produced, they're also the most durable. ]
[The all new GEnx is the little brother of the GE90.]
[The GEnx is built on some of the key design and material technologies]
[The GEnx will be used to power the new Boeing 787]
[The GEnx bears a family resemblance to the GE90. ]
[It's slightly smaller, but still has a huge fan to move]
[massive amounts of bypass air. ]
[It also has a composite fan blade like the GE90,]
[but the GEnx outdoes its big brother]
[As we step to the side, you can see that the GEnx also has a composite fan case. ]
[This makes the fan package about 400 pounds lighter than]
[if we use conventional materials like aluminum.]
[This allows GE to remove almost 1000 pounds from Boeing's new 787.]
[The GEnx also has fewer fan blades]
[The GE90 has 22 fan blades, but because of its unique modern design,]
[All of these technologies combined allow the GEnx to]
[be 15 percent more fuel efficient than the engine it replaces. ]
[The GEnx is also exceptionally quiet and only produces]
[about half the noise than the engine it replaces. ]
[In fact, during one of our early engine tests, one of our team members]
[entered the test site from the parking lot and wanted to know why the engine wasn't running. ]
[I had to explain to him that it was, it was just that quiet. ]
