|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||181/214; 181/210; 181/212; 415/119; 244/001N; 244/053B|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 1 인용 특허 : 29|
A liner assembly for an aircraft engine housing includes a noise attenuation structure that is covered by a face sheet. The face sheet covering the noise attenuation structure includes a surface having a plurality of circumferentially spaced apart acoustic energy absorption areas that are interspersed between a corresponding plurality of acoustic energy reflective areas. The acoustic energy reflective areas scatter higher order acoustic modes into a plurality of lower order modes. The difficult to attenuate lower order acoustic modes produced by the vari...
1. A method of attenuating noise within an aircraft engine housing comprising the steps of: a) absorbing a portion of generated acoustic energy in an acoustic energy absorption area, where the acoustic energy absorption area comprises a noise attenuation structure disposed under a face sheet portion including a plurality of openings, wherein a width of the plurality of energy absorption areas varies to provide a uniformly orientated repeating pattern within the aircraft engine housing; andb) scattering higher order acoustic energy at a plurality of locat...