Propulsion system for an aircraft comprising a turbojet, a pylon and engine attachment

A propulsion system of an aircraft, the propulsion system comprising:

• a turbojet extending around a longitudinal axis and having a vertical median plane passing through the longitudinal axis and further having a fan casing and a central casing at a rear of the fan casing, and
• a pylon presenting a rigid structure with an upper spar, a front wall, and, on either side of the vertical median plane, a fitting rigidly fixed to the rigid structure,
• a cylindrical pin as one with the fan casing and an axis of which is vertical, wherein the cylindrical pin is inserted in a hole of the upper spar,
• a shackle with, at the vertical median plane, a lower articulation between the shackle and the central casing and, on either side of the vertical median plane, an upper articulation between the shackle and the front wall, and
• two reaction rods disposed on either side of the median plane, where each reaction rod comprises a front articulation, at a front end, on the central casing, and, a rear articulation, at a rear end, on one of the fittings of the pylon.