TURBOMACHINE PART WITH A NON-AXISYMMETRIC SURFACE

摘要

A turbomachine part including at least first and second blades, and a platform from which the blades extend, wherein the platform has a non-axisymmetric surface limited by first and second end planes, and defined by at least three construction curves of class CI each representing the value of a radius of the surface on the basis of a position between the lower surface of the first blade and the upper surface of the second blade according to a plane substantially parallel to the end planes, including a first curve that increases in the vicinity of the second blade; a second curve that decreases in the vicinity of the second blade; a third curve having a minimum at the second blade.

主权项

1. A turbine engine part comprising at least first and second blades, and a platform from which extend the blades,
wherein the platform has a non-axisymmetrical surface limited by a first and a second end plane, and defined by at least three construction curves of class C1 each representing the value of a radius of said surface as a function of a position between the intrados of the first blade and the extrados of the second blade according to a plane substantially parallel to the end planes, whereof: a first curve increasing in the vicinity of the second blade; a second curve arranged between the first curve and a trailing edge of the first and second blades, and decreasing in the vicinity of the second blade; a third curve arranged between the first curve and a leading edge of the first and second blades, and having a minimum at the first blade.