Importance

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Abstract

An airfoil array segment for an airfoil array of a turbomachine including a platform having a platform surface and an upstream-side platform edge, as well as at least two airfoils, whose leading and trailing edges define an inter-airfoil strip, the platform surface having a trough with a bottom configured such that the bottom is a global minimum and a radial position of the trough decreases relative to a reference surface in the circumferential direction from a suction side of one of the airfoils toward the pressure side of the adjacent other airfoil toward the bottom and from there increases in the circumferential direction, at most up to the radial position of the reference surface, and a radial position of the trough decreasing relative to a reference surface axially in the downstream direction toward the bottom and from there increasing axially in the downstream direction, at most up to the radial position of the reference surface, and the platform surface reaching at most a radial position of the reference surface, the reference surface corresponding to an uncontoured platform surface.

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First Claim