Snecma

Ateca

Alain Dravet

Georges Jean Xavier Riou

Thomas Alain Christian Vincent

Osmin Regis Delverdier

Philippe Jean Vie

Jacques Michel Albert Julliard

Thierry Jacques Albert Le Docte

Pierre Philippe Marie Loheac

Eric Jean-Louis Bouty

Jacques Michel Julliard

Georges Jean Riou

Jacques Julliard

Thierry Pascal Bardagi

Marc Emmanuel Doussinault

Thierry c/o Bat A Esc 2 Appt 65 Bardagi

An aircraft pylon for mounting a dual-flow or triple-flow jet engine, the pylon including an upper surface for connection to the aircraft, two side flanks, and a flange on the lower portion of the pylon. The pylon further includes at least one portion that extends downstream from the cold flow nozzle of the jet engine and lies in the cold flow and, on the portion thereof extending into the cold flow beyond the nozzle, at least one opening, positioned on one of the flanks of the pylon, by which an air stream is injected into or drawn from the gas flow that flows along the flanks of the pylon.

Device for reducing noise from jet-pylon interactions on jet engines

A device for attenuating acoustical noise from an exhaust nozzle of a turbojet is disclosed. The turbojet exhaust nozzle includes a central body defining the inner surface of the primary gas flow path. The central body includes an outer wall defining one, and only one, resonator cavity. The single resonator cavity is in fluid communication with the primary gas flow path via orifices through at least one upstream portion of the outer wall. The single resonator cavity and plurality of orifices compose a Helmholtz resonator.

Central body of a turbojet nozzle

A soundproofing panel having a core sandwiched between a solid wall and a porous wall. The core being connected to the walls and having partitions extending in the thickness direction between the two walls so as to form cells. Each cell containing at least one sound energy dissipating layer constituted by hollow spherical beads having mutually contacting walls that are porous and micro-perforated, and being held in position in the thickness direction between the two walls by nets that are secured to the partitions.

Soundproofing panel with beads, and a method of manufacture

Growing community of inventors

Les Pennes Mirabeau, France

Alain Dravet