Structure for bearingless gas turbine e.g. turbomotor, at inter-turbine zone that is located in space between high pressure turbine and low pressure turbine of e.g. airplane, has housing receiving support of track of bearing of shaft

摘要

The structure has a single inter-shafts centering realized in downstream of a low pressure (LP) turbine (20) between a high pressure (HP) shaft (17) and a LP shaft (21) by a back bearing (5). A HP turbine (16) comprises a disk (160) that is assembled on the HP shaft for actuating an upstream compressor (12). The single inter-shafts centering is formed on an end of the HP shaft and a portion of the LP shaft to form a housing to receive a support of an external track (210) of a rear bearing (R4) of the HP shaft.