In a "high-bypass" turbofan engine like the GEnx, 90 percent of the thrust comes from spinning fan blades in front that draw in massive quantities of air and force it out in a ring around the engine's center, or core. The GEnx's primary innovation is in its fan blades, which have been reshaped to move air more efficiently with fewer blades and are made of carbon fiber to save weight.
In order to keep that fan turning, a small percentage of the incoming air instead flows into the core, where it passes through two compressors, mixes with fuel, and ignites in a combustor. That combustion powers turbines that drive the fan up front. The exhaust of that core air provides the other 10 percent of the engine's thrust.
Click the image below to expand our piece-by-piece look at the GEnx's innovative construction (will open in a new window.) Source images courtesy General Electric
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pls present it how to work with animation
Could you make this exploded view in higher resolution and without explanations? I would love to make myself a poster from it!
It looks like GE rethought the UDF Unducted Fan concept, and simply created something in-between. A Ducted/Unducted fan.
A happy medium between a turbofan and an unducted fan, taking the best of both and leaving out the drawbacks (mainly the unprotected fan and the noise problems with UDFs)
You can't see it in this diagram, but the engine's shell uses chevrons nearest the exit nozzle to quiet the engine roar. It looks like a seraded edge.
The cool air from the turbofan bypass mixes with the hot exhaust and reduces noise producing turbulence. ooh, ahh moment....