| Geared turbofan | |
|---|---|
| |
| Diagram of a geared turbofan, two-spool, with 2 low-pressure compressors, 4 high-pressure compressors, 1 high pressure and 1 low pressure turbine. [1]: Fan. [2]: Gearbox. |
The geared turbofan is a type of turbofan aircraft engine with a planetary gearbox between the low pressure compressor / turbine and the fan, enabling each to spin at its optimum speed. The benefit of the design is lower fuel consumption and much quieter operation. The drawback is that it increases weight and adds complexity.