| 摘要 |
A fan and booster compressor system for a turbo machine comprising a first and second shafts 36, 38 coupled to a first and second input members of an epicyclic gear unit respectively; a fan 12 coupled to the second shaft and a booster compressor 16a coupled to an output member of the epicyclic gear unit 40, the booster compressor is driveable by both the first and second shafts. The output member may be a planet carrier, the first input member an annular gear and the second input member a sun gear. Alternatively the output member may be an annular gear, the first input member a planet carrier and the second input member a sun gear. The diameters of the gears of the gear unit may be provided such that, in use, the booster compressor rotates faster than the fan and in the same direction. |
