Patent ID: 9062605
Filing Date: 2015-06-23
Classification: F01D,F02C,F05D,Y02T

Abstract:
1. A turbojet including a cooling air bleed circuit arranged between two adjacent subassemblies, at least one of which is mounted to rotate at a speed related to the speed of rotation of a turbine, bleed holes being defined through a wall of one of the subassemblies, wherein these bleed holes are situated facing and close to a portion of the other subassembly, wherein: these bleed holes are situated facing and close to a portion of the other subassembly; at least one shutter element is shaped to press against a face of said wall and is fastened thereto in order to co-operate with such a bleed hole to define a flow section that increases with increasing speed of said turbine; the material of the wall in which said bleed hole is formed or the material constituting said shutter element is a material of a type in which eddy currents can be created; and said portion of the other subassembly carries at least one magnet such that relative rotation as a function of the speed of said turbine is established between said magnet and the bleed hole that is fitted with an above-mentioned shutter element.