Abstract: An acoustic attenuation panel for a propulsion unit including a nacelle and a turbojet engine includes a cellular core disposed between an inner skin and an outer skin, called acoustic skin, the acoustic skin including a plurality of acoustic apertures, the acoustic apertures being inclined, at a non-zero inclination angle (?) relative to the direction normal to the acoustic skin, upstream with respect to the flow direction of the air or gas flow to which the panel is intended to be subjected under normal operating conditions, that is to say upstream of the propulsion unit when the panel is mounted in such a unit.

Abstract: An acoustic attenuation panel for a propulsion unit including a nacelle and a turbojet engine includes a cellular core disposed between an inner skin and an outer skin, called acoustic skin, the acoustic skin including a plurality of acoustic apertures, the acoustic apertures being inclined, at a non-zero inclination angle (?) relative to the direction normal to the acoustic skin, upstream with respect to the flow direction of the air or gas flow to which the panel is intended to be subjected under normal operating conditions, that is to say upstream of the propulsion unit when the panel is mounted in such a unit.

Abstract: A device for drilling an acoustic component including a drilling head, and the drilling head has a support unit including at least two autonomous drilling cassettes. Each cassette includes at least one drill bit, a stationary frame with respect to the support unit, and a bit support moveable along the main axis (?) of the cassette between a retracted position and a deployed position. In particular, each bit support is equipped with a device for sensing the skin of the acoustic component to be drilled allowing to automatically control the drilling depth of the bits of each cassette.

Abstract: The present disclosure relates to a drilling robot and a method for controlling a drilling robot including a driven mechanical structure allowing to place a drilling tool in a sequence of drillings programmed in terms of position and orientation of the drilling of a part such as a technical skin. The method includes a step of determining the acceleration of the drilling tool at the end of the approach on a drilling position, then also testing a stabilization condition of the drilling tool to finally establish a drilling authorization.

Abstract: A device for drilling an acoustic component including a drilling head, and the drilling head has a support unit including at least two autonomous drilling cassettes. Each cassette includes at least one drill bit, a stationary frame with respect to the support unit, and a bit support moveable along the main axis (?) of the cassette between a retracted position and a deployed position. In particular, each bit support is equipped with a device for sensing the skin of the acoustic component to be drilled allowing to automatically control the drilling depth of the bits of each cassette.

Abstract: The present disclosure relates to a drilling robot and a method for controlling a drilling robot including a driven mechanical structure allowing to place a drilling tool in a sequence of drillings programmed in terms of position and orientation of the drilling of a part such as a technical skin. The method includes a step of determining the acceleration of the drilling tool at the end of the approach on a drilling position, then also testing a stabilization condition of the drilling tool to finally establish a drilling authorization.