TWIN-ENGINE SYSTEM WITH ELECTRIC DRIVE

A twin-engine system (10) includes a gas turbine engine (20) comprising a core (22) and a first output shaft (24) drivable by the core (22). An electric engine (30) has an electric motor (32) configured to drive a second output shaft (34). A reduction gear box (RGB) (40) has an RGB input (42) drivingly engaged to both the first output shaft (24) and the second output shaft (34). The RGB (40) has an RGB output (44) to provide rotational output to a rotatable load (50).