公开(公告)号：US20250001508A1

公开(公告)日：2025-01-02

申请号：US18757348

申请日：2024-06-27

Applicant: SAFRAN NACELLES

Inventor： Pierre-Yves GINI ,  Marc VERSAEVEL ,  Denis RAMAGE

IPC: B23B47/28 ,  B23B35/00 ,  B23B39/04 ,  B23B39/10 ,  B23Q11/10

Abstract: A machining device for producing at least one orifice in a workpiece made of composite material, the machining device including a tool holder and at least one drill bit mounted on the tool holder, the drill bit being configured to be driven in rotation about an axis of rotation. The machining device includes a cylindrical guide body coaxial with the axis of rotation, mounted on the tool holder, and surrounding the drill bit, the guide body being configured to bear on the workpiece during the production of the orifice and the drill bit projecting from the guide body.

公开(公告)号：US20190161200A1

公开(公告)日：2019-05-30

申请号：US16260972

申请日：2019-01-29

Applicant: Safran Nacelles ,  Safran Aircraft Engines

Inventor： Marc VERSAEVEL ,  Denis RAMAGE ,  Baptiste CORDIER ,  Georges RIOU ,  Jacky MARDJONO

IPC: B64D33/02 ,  F02C7/045 ,  F02C7/24 ,  F02K1/82 ,  B64D29/00

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 (β) 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.