A rotor arrangement for a gas turbine

摘要

With highly loaded rotors and stators problems can occur with secondary flows sweeping low momentum fluid across the blades reducing efficiency. By provision of collector slots 35 to collect the secondary air and direct that air to a return slot 37 in a rotor hub 32 it is possible to provide impetus to the collected secondary flow C to an outlet slot 36 such that there is dispersal of the secondary flow C and therefore reduce the effects upon the overall performance of a gas turbine engine incorporating the arrangement.