AERODYNAMIC COUPLING BETWEEN TWO ANNULAR ROWS OF STATIONARY VANES IN A TURBINE ENGINE

摘要

The invention relates to a turbine engine which comprises at least two consecutive annular rows of stationary vanes made up, for example, of the vanes of a synchronising ring (110) and by an annular row of casing arms (120) arranged downstream from the synchronising ring, each casing arm lying substantially in a radial plane passing between the trailing edges of two adjacent stationary vanes (112') of the synchronising ring, and the pitch (P1) between said two stationary vanes being greater than the pitch (P2) between the other stationary vanes (112) of the synchronising ring, such that the slipstreams (130) formed at the trailing edges of said two vanes pass respectively on either side of the corresponding casing arm.