Patent ID: 11905888
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A multi-engine system for an aircraft, comprising:
a first engine having a first output shaft, a first core shaft, and a first electric machine operable as a generator, the first electric machine drivingly engaged by the first output shaft or the first core shaft;
a second engine having a second output shaft, a second core shaft, and a second electric machine operable as an electric motor, the second electric machine drivingly engaged to the second core shaft;
a reduction gearbox drivingly engaged by the first output shaft and by the second output shaft for driving a common load; and
a transmission path between the first engine and the second engine, the transmission path being independent from the reduction gearbox, the transmission path being one or more of:
a torque-transfer connection via a coupling gearbox, the coupling gearbox having a first load path and a second load path independent from the first load path, the coupling gearbox being reversible such that the first core shaft and/or the first output shaft is engageable to the second core shaft via the first load path, the second core shaft and/or the second output shaft is engageable to the first core shaft via the second load path, and
an electrical connection between the generator and the electric motor to transmit electrical power generated by the generator to the electric motor to drive the second core shaft.