Method for defining the shape of a turbomachine convergent-divergent nozzle, and corresponding convergent-divergent nozzle

According to the invention, the method for defining the shape of a convergent-divergent nozzle of longitudinal axis L-L comprising a convergent part connected, at a throat, to a divergent part the downstream free end of which comprises scallops delimiting noise-reducing chevrons distributed in the c...

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Hauptverfasser: Jonathan Langridge, Julien Szydlowski, Guillaume Bodard, Matthieu Leyko
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creator Jonathan Langridge
Julien Szydlowski
Guillaume Bodard
Matthieu Leyko
description According to the invention, the method for defining the shape of a convergent-divergent nozzle of longitudinal axis L-L comprising a convergent part connected, at a throat, to a divergent part the downstream free end of which comprises scallops delimiting noise-reducing chevrons distributed in the circumferential direction, comprises defining beforehand the divergent part of the nozzle using a divergent first portion, a divergent second portion and a convergent portion, attributing an initial value to dimensional parameters defining the chevrons and the three portions, calculating performance criteria and checking that the calculated performance criteria satisfy predefined performance conditions.
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subjects BLASTING
COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
JET-PROPULSION PLANTS
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
title Method for defining the shape of a turbomachine convergent-divergent nozzle, and corresponding convergent-divergent nozzle
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