Turbomachine e.g. turbojet engine, for aircraft, has set of roller bearings placed within lubricated sealed chamber and arranged in upstream of combustion chamber along direction of main flow of gases through turbomachine

摘要

The turbomachine (1) has a set of bearings supporting a shaft system (10) constituted of two shafts (10a, 10b) and comprising a set of hydrodynamic gas bearings (12) and a set of roller bearings (14) e.g. ball bearings. The set of roller bearings is arranged in upstream of a combustion chamber (4) along direction of main flow of gases (5) through the turbomcahine. The set of roller bearings is housed within a lubricated sealed chamber (16) integrating a gear box of the turbomachine, and is arranged in upstream of a compressor part (2) i.e. high pressure compressor.