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Cover turbine nozzle patterned for noise reduction jet nozzle and associated turbine.
Cover turbine nozzle patterned for noise reduction jet nozzle and associated turbine.
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机译：盖上为降低噪音的喷嘴设计的涡轮喷嘴和相关的涡轮。
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摘要
Annular cover (14, 16) for a turbine nozzle having a plurality of patterns (26) arranged in the extension of a trailing edge (14a, 16a) of said shell and circumferentially spaced apart, each drawing substantially a form quadrilateral with a base (28) formed by a portion of the trailing edge of the cover and two vertices (30a, 30b) spaced downstream from the base and spliced thereto by two sides (32a, 32b), each drawing asymmetrical with respect to a median plane (P) of the drawing passing through a longitudinal axis (XX) of said casing and having a first portion (34a) inclined radially inwardly of the cover and a second part (34b) inclined radially outwardly of the cover, characterized in that the sides (30a, 30b) each have a drawing substantially parabolic shape.
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