Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1981-12-09
1984-02-28
Fuller, Benjamin R.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
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.
Fuller Benjamin R.
Pratt & Whitney Aircraft of Canada Limited
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