| 摘要 |
<p>#CMT# #/CMT# The assembly has two upstream and downstream rotor disks (1, 2) fixedly connected by a collar (3). The disks are formed with mounting cells (4, 5) of blade roots (6, 7). A set of ventilation units ventilates the cells. The collar comprises a median part (10) formed on its outer face with wipers (12) and a downstream part (9) extending from the median part until an upstream face (16) of the downstream disk. The downstream part of the collar is surrounded by a sectorized annular flange (20), where the downstream part is formed with air passage openings (17) opened in an annular space (21). #CMT#USE : #/CMT# Unitary assembly for disks of a rotor of a low pressure turbine of a turboshaft engine such as turbojet engine or turbopropeller, of an airplane (all claimed). #CMT#ADVANTAGE : #/CMT# The sectorized annular flange is designed so as to assemble the flange around the collar regardless of external diameter of the disks. The flask extends axially along the part of the collar, thus limiting mass of the collar, and increasing flexural strength of the collar in a simple and inexpensive manner. The air passage openings are opened in the annular space so as to allow air supply from an interior zone to the rotor while bringing air to the cells of the downstream disk to cool the cells. The flange is designed so as to reduce mass of the flange and improve resistance of the flange. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows an axial cross-sectional view of a part of a set of disks of a rotor. 1 : Upstream rotor disk 2 : Downstream rotor disk 3 : Collar 4, 5 : Mounting cells 6, 7 : Blade roots 9 : Downstream part 10 : Median part 12 : Wiper 16 : Upstream face 17 : Air passage openings 20 : Sectorized annular flange 21 : Annular space.</p> |
