Protection element for a compressor drum and method for repairing a compressor drum

An assembly comprising:

• a blade comprising a blade root,
• a compressor drum having an axis and a cylindrical shape, the compressor drum including at least one cell, the cell being a circumferential groove extending along a circumference of the compressor drum,
• the cell being delimited by an upstream blade root bearing area against which a blade root bearing area of corresponding shape abuts, an upstream internal rounded portion, a cell bottom, a downstream internal rounded portion and a downstream blade root bearing area against which a downstream blade root bearing area of corresponding shape abuts, an upstream external rounded portion and a downstream external rounded portion being respectively located in an extension of the upstream blade root bearing area and the downstream blade root bearing area,
• the compressor drum also including an upstream external face and a downstream external face having an annular shape with an axial orientation relative to the axis, an upstream vertical and a downstream vertical face extending each in a radial plane relative to the axis of the compressor drum, at least one mounting groove made in one face chosen among the upstream vertical face or the downstream vertical face,
• a protection element for the compressor drum to be arranged at least partly between the blade root and the compressor drum, the protection element comprising:
• a first side wall comprising an internal portion covering one of the internal rounded portions in the cell, a bearing area portion covering one of the blade root bearing areas in the cell, and an external portion for covering one of the external rounded portions of the compressor drum;
• a connecting wall covering one of the external faces of the compressor drum;
• and
• a second side wall comprising a projecting portion cooperating with the mounting groove made in the vertical face of the compressor drum.