EP 1982323 B1 20171108 - POROUS METAL BODIES USED FOR ATTENUATING AVIATION TURBINE NOISE
Title (en)
POROUS METAL BODIES USED FOR ATTENUATING AVIATION TURBINE NOISE
Title (de)
ZUR DÄMPFUNG VON FLUGZEUGTURBINENGERÄUSCH VERWENDETE PORÖSE METALLKÖRPER
Title (fr)
CORPS POREUX METALLIQUE PROPRE A ATTENUER LE BRUIT DES TURBINES AERONAUTIQUES
Publication
Application
Priority
- FR 2006002823 W 20061221
- FR 0513263 A 20051223
Abstract (en)
[origin: FR2895554A1] A porous metal body with two opposing main surfaces, able to reduce noise from an aircraft jet engine, has pores (1, 2) in the form of cylindrical channels emerging through the first of their ends into the engine casing and closed at their opposite ends. Each channel has a diameter (D) of between 0.1 and 0.3 mm and is situated, on at least a part of its length, at a minimal distance (e) from its closest neighbour of between 0.02 and 0.3 mm. The ration between the length and the diameter of the channels is of the order of 10 2>. Independent claims are also included for: (1) an aircraft engine casing incorporating a sector made up of this porous body; (2) the fabrication of the porous body.
IPC 8 full level
G10K 11/16 (2006.01)
CPC (source: EP US)
G10K 11/16 (2013.01 - EP US); Y10T 29/496 (2015.01 - EP US); Y10T 29/4998 (2015.01 - EP US); Y10T 428/12361 (2015.01 - EP US); Y10T 428/12479 (2015.01 - EP US); Y10T 428/24628 (2015.01 - EP US); Y10T 428/249921 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2895554 A1 20070629; FR 2895554 B1 20080321; CA 2634548 A1 20070712; CA 2634548 C 20151124; EP 1982323 A1 20081022; EP 1982323 B1 20171108; ES 2658684 T3 20180312; JP 2009521637 A 20090604; RU 2008130380 A 20100127; RU 2389084 C2 20100510; US 2010221570 A1 20100902; US 7963364 B2 20110621; WO 2007077343 A1 20070712
DOCDB simple family (application)
FR 0513263 A 20051223; CA 2634548 A 20061221; EP 06847101 A 20061221; ES 06847101 T 20061221; FR 2006002823 W 20061221; JP 2008546521 A 20061221; RU 2008130380 A 20061221; US 8702506 A 20061221