|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||181/220 ; 181/250 ; 181/262|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 36 인용 특허 : 0|
An elongate exhaust gas muffler for a turbine engine includes a foraminous central exhaust duct which is circumscribed along its length by a plurality of tuned dissipative and reactive noise attenuation chambers. At an inlet end of the muffler an annular secondary flow inlet is defined about the central exhaust duct and opens to the first sound attenuation chamber. A secondary flow of pressurized bleed air is receivable into the first attentuation treatment in the muffler.
A dual flow muffler for attenuating turbine engine noise, said muffler comprising: an exhaust duct extending axially through said muffler and defined by a foraminous duct wall having an inlet and an outlet for respectively receiving and discharging turbine engine exhaust gasses; a casing circumscribing said duct wall; a plurality of annular baffle walls disposed between said foraminous duct wall and said casing, said annular baffle walls axially spaced apart to define an axial array of tuned resonant noise attenuation cavities disposed about said foramin...