Gas turbine engine rotor ventilation arrangement

摘要

A rotor assembly for a gas turbine engine (10), the rotor assembly comprises at least two rotors (31, 32) defining a cavity (36) therebetween. A first rotor (31) defines a cooling air inlet (70) in its radially inward portion (76). A second rotor (32) defines a cooling air outlet (66) in its radially outward portion (74), such that the cooling air passes radially outwardly through the cavity (36).