Patent ID: 11867126
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 10:
11. The gas turbine engine system of claim 9, wherein the epicyclic gearing has a sun gear having a first rotation axis, the sun gear configured to receive power from at least one of the core output shaft and the auxiliary power shaft, a ring gear concentric to the sun gear relative the first rotation axis, a plurality of planet gears individually drivingly meshed between the sun gear and the ring gear, the planet gears circumferentially interspaced from one another around the first rotation axis, a planet carrier individually rotatably operatively connected to each one of the planet gears and holding rotation axes of the planet gears fixed relative to one another, wherein the epicyclic gearing of the first turboprop engine has the planet carrier secured to a housing of the reduction gearbox and the ring gear made integral to the power output shaft and the epicyclic gearing of the second turboprop engine has the ring gear secured to a housing of the reduction gearbox and the planet carrier made integral to the power output shaft.