Abstract: The invention concerns a blade (1) designed to be fitted to the rotor of a rotating machine, said blade being characterized in that it exhibits a modular construction including: a rigid, median module (4) formed by a coffer (12), which is itself formed by joining two side panels (13, 14) that are connected to one another by at least one side rail (15), the side panels (13, 14) being connected by at least one weld executed on an internal protuberance on the said side panels that is set back from the intrados (11) and the extrados (1 E) of the blade (1), an upstream module (7) forming a leading edge and added onto the upstream portion of the median module, a downstream module (8) forming a trailing edge and added onto the downstream portion of the median module. Blades for rotating machines and corresponding fabrication methods.

Abstract: The invention concerns a blade (1) designed to be fitted to the rotor of a rotating machine, said blade being characterized in that it exhibits a modular construction including: a rigid, median module (4) formed by a coffer (12), which is itself formed by joining two side panels (13, 14) that are connected to one another by at least one side rail (15), the side panels (13, 14) being connected by at least one weld executed on an internal protuberance on the said side panels that is set back from the intrados (11) and the extrados (1E) of the blade (1), an upstream module (7) forming a leading edge and added onto the upstream portion of the median module, a downstream module (8) forming a trailing edge and added onto the downstream portion of the median module Blades for rotating machines and corresponding fabrication methods.