Sound suppressor liner

Acoustics – Sound-modifying means – Muffler – fluid conducting type

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Details

181224, 181286, 181288, 181292, F01N 102

Patent

active

044337515

ABSTRACT:
A sound suppressor liner for aircraft exhaust passages is described which is based on the Helmholtz resonator principle including an inlet passage leading into a closed cavity wherein the inlet passages defined by a pair of curved walls with one wall being concave and the other wall being convex and the space between the walls gradually diminishing from the inlet of the inlet passage to the outlet within the cavity in a sense simulating an acoustic horn in reverse.

REFERENCES:
patent: 4100993 (1978-07-01), Feder
patent: 4106587 (1978-08-01), Nash et al.
patent: 4137992 (1979-02-01), Herman
patent: 4150732 (1979-04-01), Hoch et al.

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