Aircraft propulsion assembly having a jet engine, a pylon and means for attaching the jet engine to the pylon

A propulsion assembly for an aircraft, said propulsion assembly comprising:

• a jet engine having a fan casing and a central casing around a longitudinal axis and having a vertical median plane passing through the longitudinal axis,
• an attachment pylon having a rigid structure that takes a form of a box that has a front wall and an upper spar extending forwardly in respect to the front wall,
• a front engine attachment fixed between an upper area of the fan casing and a front end of the upper spar, and
• a complementary front engine attachment fixed between an upper area of the central casing and a lower end of the front wall,
• wherein the front engine attachment comprises a plate assembly mounted in a first articulated manner on the front end of the upper spar at the vertical median plane and first and second ends of the plate assembly are mounted to the upper area of the fan casing in a second articulated manner on opposite sides of the vertical median plane, the first articulated manner and the second articulated manner each providing at least a rotation around an axis parallel to a vertical axis.