Plug for rotating inlet cowl of a turbomachine, including an aerodynamic external wall and a cone attachment element

A rotating inlet cowl for a turbomachine, comprising a shell (4, figure 1) downstream of a cone (3), and a plug 8. The plug comprises an external wall 92 with an aerodynamic external surface S2 in continuity with an external surface (S1, figure 2) of the cone. The external wall 92 closes off a cavity (37) formed between an external wall (30) of the cone and the shell (4). The plug 8 comprises an internal support wall 98 bearing on the internal wall (31, 35) of the cone (3). The plug comprises an attachment device 7 to tighten and rigidly fix the support wall 98 to the internal wall (31, 35) of the cone, and to fix the cone to the shell. A tool, e.g. screwdriver, may pass through an orifice 91 in the external wall to tighten the attachment device, e.g. nut 71 and screw 70 comprising a shank 74. The plug 8 may comprise a visual physical and/or mechanical fool proofing system 96, e.g. lateral flanks for imposing a correct insertion orientation of the plug into the cone.