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dc.rights.licenseCopyright © 2020 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.es
dc.contributor.authorBardera, Rafaeles
dc.contributor.authorMatías García, J. C.es
dc.contributor.authorGarcía Magariño, A.es
dc.date.accessioned2023-11-28T09:05:22Z-
dc.date.available2023-11-28T09:05:22Z-
dc.date.issued2020-11-16-
dc.identifier.citationOcean Engineering 213: 107784(2020)es
dc.identifier.issn0001-1452-
dc.identifier.otherhttps://arc.aiaa.org/doi/10.2514/1.J059946es
dc.identifier.urihttp://hdl.handle.net/20.500.12666/893-
dc.description.abstractHelicopter operations on frigates imply complex maneuvers for pilots. During the aircraft approach to the frigate, the helicopter rotor is immersed in a changing aerodynamic flow, with high speed and turbulence intensity gradients. This occurs as a consequence of the nonaerodynamic surfaces that compose the frigates and generate detached flow on their decks. Typically, the helicopter operations on frigates are located at the stern. That is, after the superstructure of the ship and just behind the hangar where the helicopter can be hosted. Using a simplified frigate shape model, tests have been carried out at the National Institute of Aerospace Technology’s low-speed wind tunnel by modifying the hangar geometry in a bubble-shaped way to optimize it aerodynamically and improve the flow over the frigate aftdeck. Roof and side walls have been modified by linearA, circular C, and elliptical E geometries. A particle image velocimetry (PIV) technique has been used for obtaining the flow velocity field above and behind the hangars proposed to evaluate the effectiveness of each geometry modification proposed. Finally, a numerical comparison with the PIV results and parameters such as the storage capacity reduction of the hangar due to its geometry change has been carried out.es
dc.description.sponsorshipThe authors would like to thank the staff of the Experimental Aerodynamics department of the National Institute of Aerospace Technology who participated in the tests presented in this paper. No specific funding.es
dc.language.isoenges
dc.publisherElsevieres
dc.subjectTandem rotor helicopterses
dc.subjectWind over the deckes
dc.subjectParticle image velocimetryes
dc.subjectAerodynamic flowses
dc.subjectLow speed wind tunneles
dc.subjectReynolds averaged navier stokeses
dc.subjectTurbulence intensityes
dc.subjectAerospace technologyes
dc.subjectVelocity profileses
dc.subjectComputational fluid dynamics simulationes
dc.titleAerodynamic optimization over frigate helicopter flight deck by Hangar shape modificationses
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.2514/1.J059946-
dc.identifier.e-issn1533-385X-
dc.description.peerreviewedPeerreviewes
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccesses
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es
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