Stealth wind turbine blade with reduced radar equivalent surface area and wind turbine equipped with such a blade

摘要

Wind turbine blade (1) having a hollow casing (2) that has at least locally a sandwich-type wall (2.1), this wall (2.1) being made up of at least two skins (7.1, 7.2) of separate dielectric composite materials by a core (9) made of a material with a small dielectric constant, characterized in that it comprises: - at least one inductive or capacitive compartment adaptation circuit (10) located inside the core (9) that makes it possible to reduce the radar equivalent surface of the blade (1) making said blade (1) transparent in the frequency band of a radar in the vicinity of which said blade (1) is intended to be installed.