|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||H05B-003/10 H01C-003/12 B22B-031/00 B64D-015/00|
|미국특허분류(USC)||219/548 ; 219/528 ; 219/535 ; 219/547|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 53 인용 특허 : 0|
A perforated flat ribbon heating element embedded or sandwiched between the porous material and perforated sheet of honeycomb acoustic panel material used for sound suppression and deicing on ice buildup areas of an aircraft engine.
Acoustic attenuation and ice-protection material used for aircraft structures which are exposed to the sound of jet engines, other noise producing mechanisms and ice buildup, said material having a predetermined flow-through resistance, comprising: (a) a honeycomb core having a plurality of endwise directed cells; (b) an unperforated facing sheet secured to the edges of said cells along one side of said honeycomb core; (c) a perforated facing sheet secured to the edges of said cells along the other side of said honeycomb to form a Helmholz resonator stru...