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1.发明授权公开(公告)号：US10408165B2
公开(公告)日：2019-09-10
申请号：US15561359
申请日：2016-03-25
Applicant: SAFRAN AIRCRAFT ENGINES
Inventor： Jacky Mardjono , Philippe Chanez , Jeremy Gonzalez , Maxime Koenig , Marc Versaevel , Franck Zaganelli , Henri Yesilcimen
Abstract: A device for reducing the jet noise of a turbine engine includes an outer cover having an inside wall defining the outside of an annular passage for passing a bypass stream from the engine, the wall of the outer cover including a plurality of microjet circuits, each including intakes for taking a gas stream from the bypass stream flow passage and leading to a single feed duct, which in turn opens out into the trailing edge of the outer cover via at least one ejection grating suitable for splitting the intake gas stream into a plurality of gas streams of right sections of dimensions less than a right section of the feed duct.
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公开(公告)号：US20190017439A1
公开(公告)日：2019-01-17
申请号：US16025582
申请日：2018-07-02
Applicant: SAFRAN AIRCRAFT ENGINES
Inventor： Georges RIOU , Jacky Mardjono , Norman Jodet , Jeremy Gonzalez
CPC classification number: F02C7/045 , B64D33/02 , B64D2033/0206 , F01D9/041 , F04D29/542 , F04D29/665 , F05D2220/36 , F05D2260/962 , F05D2260/963
Abstract: A turbomachine vane includes an electroacoustic source including two membranes fixed on a support arranged such that the membranes and the support delimit a first cavity. The membranes are arranged on two opposite sides of the first cavity between the two aerodynamic surfaces of the vane. A first of the aerodynamic surfaces includes a first region arranged facing a first of the membranes for the passage of acoustic waves. The membranes and membrane vibration device are configured such that the membranes vibrate in phase opposition and along a same emission direction by applying forces to the support such that the resultant force is approximately zero. The mechanical energy lost in the form of vane deformations due to membrane vibrations can thus be minimized.
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