Aircraft propulsion system comprising a member covered with a grooved structure
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United States of America Patent
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Oct 19, 2021
Grant Date -
May 23, 2019
app pub date -
Apr 24, 2017
filing date -
Apr 26, 2016
priority date (Note) -
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Abstract
The invention concerns an aircraft propulsion system comprising at least one member (1, 3, 4, 8) in contact with a turbulent flow of a stream (F), characterised in that said member is covered, at least partially, by a piezoelectric structure (S) such as a piezoelectric film, said structure (S) comprising a grooved structure (5, 6, 7, 9) comprising a series of grooves, in contact with the flow of the stream, the grooves extending in the direction of flow of the stream, the grooved structure comprising at least one geometric parameter (h, s, w) configured to adapt depending on at least one parameter of the flow of the stream and/or an operating point of the propulsion system and/or an engine speed of the propulsion system.
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