A reusable bumper (10) for a rotorcraft (1) suitable for protecting a rear end (3) of said rotorcraft (1). The bumper (10) comprises a resilient outer shell (20) forming a first chamber (11) having a resilient inner shell (30) placed therein and forming a second chamber (12), said outer shell (20) having at least one main orifice (21), said inner shell (30) being provided with management means (50) for managing the pressure that exists inside said second chamber (12) and suitable for enabling said pressure to increase up to a predetermined threshold in order to inform the pilot that the bumper (10) has made contact with the ground (S), and then to enable said pressure to drop in order to absorb energy resulting from said contact.