Double fan turbofan engine having variable fan guide vanes

The turbofan has a low pressure compressor (7) disposed axially between blades (10) of a front fan (3) and blades (14) of an aft fan (5). Stator grids (45, 46) are axially arranged on both sides of a movable vane crown (40). A grid gate ring (47) is supported by an outer grid (48) placed in a secondary flow duct. A stator (50) with variable setting is disposed downstream of the grid (48).