Annular stator structure for a rotary machine
In an axial flow turbofan gas turbine engine of the type having an axis Ar and being dividable into four quadrants about the axis Ar, an engine casing extending circumferentially about the axis Ar, a fan casing spaced radially outwardly from the engine casing leaving an annular flow path for working medium gases extending circumferentially therebetween, and struts extending from the engine casing to the fan casing across the working medium flow path, each strut being attached to the fan casing at one end and to the engine casing at the other end, the improvement is described which comprises: an array of guide vanes extending radially across the working medium flow path and disposed about the axis Ar such that each quadrant has at least one of the guide vanes disposed in the quadrant, each of the guide vanes being attached to the engine casing and being attached to the fan casing, each of the guide vanes having a free length and having an installed length at installation and under non-operative conditions which is greater than the free length such that under normal operative conditions the guide vanes are placed in tension, the engine casing is placed in tension, and the fan casing is placed in compression.
- Assignee:
- United Technologies Corp., Hartford, CT
- Patent Number(s):
- US 4722184
- OSTI ID:
- 5330246
- Resource Relation:
- Patent File Date: Filed date 25 Jun 1987
- Country of Publication:
- United States
- Language:
- English
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