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

Claim 17:
18. 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
means for driving the second core shaft with the first core shaft or with the first output shaft independently of the reduction gearbox, the means including a 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.