TURBOMACHINE NOZZLE COVER FOR REDUCING JET NOISE

PROBLEM TO BE SOLVED: To propose a cowl for a separated flow nozzle enabling more effective mixture between a high temperature flow and a low temperature flow to reduce jet noises at an outlet from the nozzle. SOLUTION: The cowl 14, 16 is used for a turbomachine nozzle, and has a number of repeated...

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Bibliographische Detailangaben
Hauptverfasser:	MIROUDOT FREDERIC R J, THOMAS STEPHANE, JULLIARD JACQUES MICHEL ALBERT, LOHEAC PIERRE, NOGUES JEAN-MICHEL, GOUTINES MARIUS
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS JET-PROPULSION PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To propose a cowl for a separated flow nozzle enabling more effective mixture between a high temperature flow and a low temperature flow to reduce jet noises at an outlet from the nozzle. SOLUTION: The cowl 14, 16 is used for a turbomachine nozzle, and has a number of repeated patterns 26 arranged circumferentially at a rear edge 14a. Each pattern 26 is asymmetrical about a central surface of the pattern including a longitudinal axis X-X of the cowl 14, 16. Each pattern 26 includes a first portion radially inclined toward the inside of the cowl 14, 16, and a second portion radially inclined toward the outside of the cowl 14, 16. COPYRIGHT: (C)2011,JPO&INPIT