Patent ID: 9664204
Date: 2017-05-30
CPC Classifications: F04D

Claim:
1. A structural assembly for a turbofan engine comprising: a main flow path boundary confining a main flow path of a fluid-flow machine, where at least one row of blades each with one blade end is arranged in the main flow path, where a gap exists between the blade ends of the at least one row of blades and the main flow path boundary, and where there is a rotating relative movement between the blades of a blade row and the main flow path boundary, and at least one secondary flow duct, having in the main flow path boundary, two openings, one opening each at ends spaced apart in a flow direction, such that the at least one secondary flow duct is connected to the main flow path via the two openings, wherein: the structural assembly has at least one support component and a separate at least one insertion component, the at least one support component includes a structure extending in a circumferential direction and receiving or holding the at least one insertion component along a circumference thereof, the structure extending in the circumferential direction is at least one chosen from a recess, a projection and a ridge, a face of the at least one insertion component forms a first part of the main flow path boundary, and the at least one secondary flow duct is jointly limited along at least part of a course thereof by faces of the at least one support component and the at least one insertion component, a face of the at least one support component forms a second part of the main flow path boundary; wherein the at least one support component is at least one chosen from an annular casing and a half-shell casing of the turbofan engine and encloses at least one further component of the structural assembly from outside the at least one further component.