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dc.contributor.authorCîrciu, Ionică
dc.date.accessioned2017-12-14T13:13:27Z
dc.date.available2017-12-14T13:13:27Z
dc.date.issued2010
dc.identifier.issn1224-5615
dc.identifier.urihttp://10.11.10.50/xmlui/handle/123456789/4978
dc.descriptionThe Annals of ''Dunarea de Jos'' University of Galati Fascicle XIV MECHANICAL ENGINEERING ISSN 1224 - 5615ro_RO
dc.description.abstractCoandă effect is a well-known fluid mechanics phenomenon in which a jet flow attaches itself to a nearby surface and remains attached even when the surface bends away from the initial jet direction and the jet is deflected closer to the surface, up to attaching to it. Using Coandă effect, the anti-torque NOTAR system replaces the use of a tail rotor on a helicopter. A fan inside the tailboom creates a large volume of lowpressure air, which exits through two slots and creates a boundary layer of airflow along the tailboom, due to the Coandă effect. The interaction of this air flow with the downwash from the main rotor creates a force oriented as an anti-torque force, an opposed to that of the main rotor. The airflow escapes the slots tangential to the external surface of the tailboom in a parallel direction to that of the external flow. The final result is the deflection of the external flow and generation of lift forces.ro_RO
dc.language.isoenro_RO
dc.publisherUniversitatea "Dunărea de Jos" din Galațiro_RO
dc.subjectCoandă effectro_RO
dc.subjectNOTARro_RO
dc.subjectattached jetro_RO
dc.subjectjet thrusterro_RO
dc.titleCoandă Effect Used to Improve the Efficiency of a Rotary Wing Aircraftro_RO
dc.typeArticlero_RO


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