Quiet nacelle system and hush kit

Details Quiet nacelle system and hush kit Quiet nacelle system and hush kit

1987-07-28

1989-04-04

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181213, 181222, 181286, B64D 3302, F02K 144

Patent

active

048177563

ABSTRACT:
A quiet nacelle system for jet aircraft engines includes a nose cowl and nose dome having a sound-attenuating liner, a concentric ring between the nose cowl and nose dome, and fan duct components having a sound-attenuating liner. The system is particularly suitable for JT3D-3B and JT3D-7 engines for use with DC-8 aircraft. The components may be combined as a hush kit for retrofit in existing nacelle systems.

REFERENCES:
patent: 3065818 (1962-11-01), Lombard et al.
patent: 3542152 (1970-11-01), Adamson et al.
patent: 3568790 (1971-03-01), Sankey
patent: 3819008 (1974-06-01), Evans et al.
patent: 3820628 (1974-06-01), Hanson
patent: 4235303 (1980-11-01), Dhoore et al.
patent: 4244441 (1981-01-01), Tolman
patent: 4379191 (1983-04-01), Beggs et al.
patent: 4433751 (1984-02-01), Bonneau
patent: 4452335 (1984-06-01), Mathews et al.

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