AIRCRAFT ENGINE WITH CLUTCH AND MECHANICAL LOCK

An aircraft engine assembly (100) includes an engine (12) having an engine shaft (14); an output shaft (16); a clutch (30; 230) in driving engagement between the engine shaft (14) and the output shaft (16). The clutch (30; 230) has a first component (34f; 230a) in driving engagement with the engine shaft (14) and a second component (30b; 230bi). The clutch (30; 230) is operable between first and second configurations. In the first configuration, the first component (34f; 230a) is rotatable relative to the second component (30b; 230bi) and the engine shaft (14) is rotatable relative to the output shaft (16). In the second configuration, the first and second components (34f, 30b; 230a, 230bi) are engaged with one another and the engine shaft (14) rotates with the output shaft (16). A mechanical lock (32; 232) is operable between first and second positions. In the first position, the mechanical lock (32; 232) is disengaged from the first component (34f; 230a). In the second position, the first and second components (34f, 30b; 230a, 230b) are secured for joint rotation one relative to the other.