| 摘要 |
<P>PROBLEM TO BE SOLVED: To use a honeycomb to make nacelles and other structures that are useful in reducing the noise generated by a jet engine or other noise sources. <P>SOLUTION: An acoustic structure that includes a honeycomb having cells in which septum caps are located is provided. The septum caps are formed from sheets of acoustic material and include a resonator portion and a flange portion. The flange portion has an anchoring surface that provides frictional engagement of the septum caps to the honeycomb cells when the caps are inserted into the honeycomb during fabrication of the acoustic structure. An adhesive is applied to the anchoring surface of the septum caps after the caps have been inserted into the honeycomb cells to provide a permanent bond. <P>COPYRIGHT: (C)2013,JPO&INPIT |
