Mechanism for turbine engine start from low spool

摘要

A gas turbine engine (10) includes a high spool (14), a low spool (12) mechanically connected to a fan (26, 28), a gear system (24), an actuator (22; 22'), and a starter (50). The gear system is actuable to engage and disengage the low spool to and from the high spool. The actuator is connected to the gear system for selectively engaging and disengaging the gear system. The starter is connected to the low spool and can drive rotation of the high spool through the low spool when the gear system is engaged.