TURBOMACHINE A HELICES NON CARENEES

摘要

The turbomachine has a contraprop coaxial external upstream unducted fan (122) and a contraprop coaxial external downstream unducted fan provided with blades. Each blade comprises a leading edge (140) and a trailing edge (142) connected by a longitudinal external edge (144). The longitudinal external edge of the blade comprises triangular solid parts (150) and hollow parts (152) in an alternative manner. Each solid part has an upstream edge (154) that is parallel or inclined with respect to radius (156) at a longitudinal axis of the turbomachine.