COMPRESSOR SYSTEM

摘要

In a gas turbine engine, the booster compressor is driven by both the low pressure or fan shaft and high pressure shaft through a differential gear arrangement. The rotational speed of the booster compressor is intermediate between the speed of the fan and the speed of the high pressure compressor.

主权项

1. A compressor system for a turbo machine, the turbo machine including (1) a low pressure shaft coupled to a low pressure turbine; and (2) a high pressure shaft coupled to a high pressure turbine, the compressor system comprising:
a fan driven by the low pressure turbine via the low pressure shaft; a booster compressor; and an epicyclic gear unit; wherein:
the low pressure shaft is coupled to a first input member of the epicyclic gear unit,the high pressure shaft is coupled to a second input member of the epicyclic gear unit,the booster compressor is coupled to an output member of the epicyclic gear unit,the booster compressor is driven by the low pressure shaft and the high pressure shaft, anda proportion of a torque extracted from each of the low pressure shaft and the high pressure shaft remains constant throughout a running range of the turbo machine.