Patent ID: 9032721
Filing Date: 2015-05-19
Classification: F01D,F02K,F05D

Abstract:
1. A flow passage for an axial flow machine comprising: an inner boundary; an outer boundary radially spaced from said inner boundary so that an annular flow path for guiding a fluid flow in an axial direction is defined therebetween; a source of compressed fluid; a flow control vane including leading and trailing edges, said vane supported at a radial location between said inner and outer boundaries, wherein said vane is supported on a strut structure and said strut structure extends from said inner boundary to said outer boundary and includes laterally opposing sides, and said flow control vane intersects said laterally opposing sides of said strut structure; a fluid discharge opening for discharging a flow of the compressed fluid from said trailing edge; a fluid control surface adjacent to said fluid discharge opening and extending in the axial direction at said trailing edge of said vane, said fluid control surface having a curved trailing edge forming a Coanda surface; and said fluid discharge opening being selectively provided with the compressed fluid from said source of compressed fluid to produce a Coanda effect along said control surface, the Coanda effect having a component in the radial direction effecting a turning of the fluid flow in said flow path radially inward or outward toward one of said inner and outer boundaries.