|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||244/1N ; 244/53B ; 181/222 ; 181/292|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 30 인용 특허 : 0|
A noise reduction nacelle for a jet engine having an inlet duct, a center body and at least one exit duct and which includes a composite sandwich panel positioned in the inlet duct, the center body and the at least one exit duct. The panel includes an inner face sheet, a honey comb core and an outer face sheet wherein the inner face sheet and the outer face sheet are connected to the inner and outer surfaces, of the core. A plurality of perforations are provided in the inner face sheet of a predetermined density and wherein each of the perforations is of...
A noise reduction nacelle for a jet engine, having an inlet duct, a center body and at least one exit duct, comprising: a composite sandwich panel positioned in said inlet duct, said center body and said at least one exit duct for absorbing high frequency harmonics produced by high speed air flow and for dampening noise generated by said engine wherein said panel consists of an inner face sheet, a honey comb core, an outer face sheet and an adhesive sheet positioned between at least one of said inner and outer face sheets and said honey comb core wherein...