|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 2 인용 특허 : 9|
An apparatus for attenuating acoustic resonance generated by flow over a cavity in a surface comprises a plurality of flat flaps proximate to an upstream edge of the cavity. The flaps are disposed in an array spaced in a width direction of the cavity edge, and are oscillated by the flow in two degrees of freedom solely by the flow, independent of an actuation mechanism. Each flap includes a first hinge generally coextensive with the surface for enabling oscillation in a first degree of freedom and a second hinge orthogonal to the first hinge and forming ...
What is claimed is: 1. Apparatus for attenuating acoustic resonance generated by flow over a surface with a cavity therein, the apparatus comprising: a plurality of flaps proximate to the cavity at an edge thereof upstream in the direction of the flow, said flaps being disposed in an array spaced in a width direction of said upstream edge; and a mounting arrangement for mounting each said flap for oscillation relative to the flow, wherein each said flap is constructed to oscillate with two degrees of freedom and the oscillation of each said flap is driv...