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TsAGI Science Journal

ISSN Imprimer: 1948-2590
ISSN En ligne: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2018026680
pages 723-750

THREE-DIMENSIONAL AFTERBODY DRAG WITH NOZZLE JET

Gennadii Nikolaevich Lavrukhin
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region, Russia
Vadim Alekseevich Talyzin
Central Aerohydrodynamic Institute (TsAGI), 1 Zhukovsky Str., Zhukovsky 140180, Russia

RÉSUMÉ

This paper summarizes the results of investigation in Russia and abroad within the scope of external drag of afterbodies with nozzles (axisymmetric, flat, nonsymmetric) at subsonic and transonic Mach numbers. Fundamental phenomena of separation and nonseparation flow pattern are considered, including the effect of positive interference of the jet with sub- and transonic external flow. The influence of the geometric parameters of the afterbody with a jet nozzle on their drag is shown; the criteria for the flow around it to be attached and the conditions for ensuring a minimum external drag are formulated.


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