RING CASE FOR TURBOMACHINE NOZZLE, TURBOMACHINE NOZZLE AND TURBOMACHINE WITH SUCH RING CASE Russian patent published in 2014 - IPC F02K1/48 

FIELD: engines and pumps.

SUBSTANCE: proposed ring case comprises multiple raised elements extending from the case rear edge and spaced apart in circle. Every raised element features, in fact, a triangular shape with base composed by the case rear edge part and vertex located at maximum distance from said base and connected therewith by two lateral edges. Every raised element has rib at every lateral edge. Every rib is inclined radially relative to raised element in the plane inclined relative to radial direction through angle smaller than or equal to 45 degrees. Anther invention of the set relates to turbomachine nozzle with the main and auxiliary cases arranged concentrically, one of them being implemented as described above. One more invention of the set relates to turbomachine with such nozzle.

EFFECT: decreased noise and influence of raised elements on nozzle aerodynamic properties.

9 cl, 6 dwg