Noise reduction conduit for static components in aircraft...

Details Noise reduction conduit for static components in aircraft... Noise reduction conduit for static components in aircraft...

2005-08-30

2005-08-30

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

Reexamination Certificate

active

06935834

ABSTRACT:
Noise reduction conduit for non rotary components of aircraft engines, subjected to a characteristic range of temperatures of a gas turbine engine, constituted by an annular structure composed of an aerodynamic wet wall (10a, 10b), perforated and resistant mechanically and thermally; of a dry wall (12a, 12b), not resistant and of light weight; and of some intermediate elements to which both walls are mechanically attached and that define a jump or difference of temperature between the wet and dry walls; between which wet (10a, 10b) and dry walls (12a,12b) there are partitions that define cavities (16a, 16b) isolated with regard to each other.

REFERENCES:
patent: 2988302 (1961-06-01), Smith
patent: 3542152 (1970-11-01), Oxx, Jr. et al.
patent: 4828175 (1989-05-01), Heufler et al.
patent: 5592813 (1997-01-01), Webb

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