One-piece engine inlet acoustic barrel

Metal working – Method of mechanical manufacture – Prime mover or fluid pump making

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Details

181213, 181214, 181292, 1563074, 156148, 156294, 29458, F02K 100

Patent

active

057687781

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 spice 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.

REFERENCES:
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patent: 4759513 (1988-07-01), Birbragher
patent: 4817756 (1989-04-01), Carr et al.
patent: 4826106 (1989-05-01), Anderson
patent: 4850093 (1989-07-01), Parente
patent: 4969535 (1990-11-01), Arcas et al.
patent: 5014815 (1991-05-01), Arcas et al.
patent: 5025888 (1991-06-01), Arcas et al.
patent: 5175401 (1992-12-01), Arcas et al.

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