Lonnie G. Hilliard - Kent WA Michael J. Sibborn - Bellevue WA
Assignee:
Boeing Commercial Airplane Company - Seattle WA
International Classification:
B29C 1700
US Classification:
156285
Abstract:
A composite structure is prepared in a mold using a vacuum bag with an edge breather separated from a layup to be formed into a composite. A means of communication between the edge breather and the layup provides a path for air being drawn from the layup and to provide a path that closes off and prevents excess resin flow from the layup as it cures.
Lonnie George Hilliard - Kent WA Juris Verzemnieks - Puyallup WA
Assignee:
The Boeing Company - Seattle WA
International Classification:
G10K 1104
US Classification:
181290
Abstract:
A sound attenuating laminate exhibiting a relatively low change in acoustic resistance with respect to particle velocity is disclosed. The laminate includes a gas permeable mat of randomly arranged, small diameter filaments interleaved between two layers of resin impregnated, open weave web or cloth. A predetermined pattern of adhesive applied to the filamentous mat penetrates the mat to bond the laminate into an integral structure. The laminate can be easily fabricated to form sound attenuating panels having a variety of contours by curing the composite within a mold.