Patent ID: 9359960
Filing Date: 2016-06-07
CPC Classification: F02C,F02K

Claim Text:
1. A gas turbine comprising: a high pressure spool; a high pressure compressor; a high pressure turbine mechanically coupled to the high pressure spool, the high pressure compressor having a first set of high pressure compressor blades and a second set of high pressure compressor blades, the second set of high pressure compressor blades being located downstream of the first set of high pressure compressor blades and being operative to rotate at a rotational speed corresponding to a rotational speed of the high pressure spool; a lower pressure spool; a lower pressure turbine mechanically coupled to the low pressure spool; and a gear assembly mechanically coupled to the high pressure spool and engaging the first set of high pressure compressor blades such that rotation of the high pressure spool rotates the first set of high pressure compressor blades at a lower rotational speed than the rotational speed of the second set of high pressure compressor blades, wherein the gear assembly comprises an epicyclic gear having a sun gear, multiple planet gears and a ring gear; and a casing surrounding at least a portion of the high pressure turbine, and rotational axes of the multiple planet gears are fixed in position relative to the casing.