One-piece engine inlet acoustic barrel

Details One-piece engine inlet acoustic barrel One-piece engine inlet acoustic barrel

1995-05-18

1996-12-03

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181214, 181292, F02K 100

Patent

active

055810543

ABSTRACT:
An acoustic liner jet engine inlet barrel is formed from a perforated permeable skin, a honeycomb core, and a solid facesheet, each of which is formed in a one-piece configuration such that at most only a narrow single fore-to-aft splice, or no splice at all, is present in the finished product. The acoustic modal content remains unaffected, thus preserving a high degree of liner effectiveness, increasing the total active acoustic area of the barrel while decreasing its weight, and increasing its durability.

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patent: 5025888 (1991-06-01), Arcas et al.
patent: 5175401 (1992-12-01), Arcas et al.

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