Flow in the near air wake of a modified frigate
Current naval ships were designed without considerations for the air wake encountered on the flight deck. Naval frigates superstructures design has resulted in a sharp-edges box type that generates a wake dominated by highly turbulent recirculating flows. These flows can affect the safety of the hel...
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| Veröffentlicht in: | Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering Journal of aerospace engineering, 2015-05, Vol.229 (6), p.1003-1012 |
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| container_title | Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering |
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| creator | Bardera, R Meseguer, J |
| description | Current naval ships were designed without considerations for the air wake encountered on the flight deck. Naval frigates superstructures design has resulted in a sharp-edges box type that generates a wake dominated by highly turbulent recirculating flows. These flows can affect the safety of the helicopter during the takeoff and landing maneuvers. This paper presents wind tunnel tests performed in order to obtain a more complete insight and understanding of the typical flow on a simple frigate shape. Moreover, a solution to reduce the influence of the wake flow above the flight deck and a risk reduction for on-board helicopter operations is proposed by modifying the usual frigate geometry. Four simple frigate shape hangar roof configurations were investigated by wind tunnel testing. Measurements of the velocity and pressure fields on the flow above the flight deck were performed and results compared in order to evaluate the effectiveness of the modified hangar roof design. |
| doi_str_mv | 10.1177/0954410014542449 |
| format | Article |
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Naval frigates superstructures design has resulted in a sharp-edges box type that generates a wake dominated by highly turbulent recirculating flows. These flows can affect the safety of the helicopter during the takeoff and landing maneuvers. This paper presents wind tunnel tests performed in order to obtain a more complete insight and understanding of the typical flow on a simple frigate shape. Moreover, a solution to reduce the influence of the wake flow above the flight deck and a risk reduction for on-board helicopter operations is proposed by modifying the usual frigate geometry. Four simple frigate shape hangar roof configurations were investigated by wind tunnel testing. 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Measurements of the velocity and pressure fields on the flow above the flight deck were performed and results compared in order to evaluate the effectiveness of the modified hangar roof design.</description><subject>Aerodynamics</subject><subject>Design engineering</subject><subject>Flight decks</subject><subject>Flow velocity</subject><subject>Fluid dynamics</subject><subject>Frigates</subject><subject>Geometry</subject><subject>Hangars</subject><subject>Helicopters</subject><subject>Naval</subject><subject>Naval engineering</subject><subject>Turbulent flow</subject><subject>Wakes</subject><subject>Wind tunnels</subject><issn>0954-4100</issn><issn>2041-3025</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp1kM1LAzEQxYMoWKt3jwEvXtbmc7J7lGJVKHjR8xJ3JzV1u6nJLsX_3pR6kIJzGYb3e4_hEXLN2R3nxsxYpZXijHGllVCqOiETwRQvJBP6lEz2crHXz8lFSmuWR4OckNmiCzvqezp8IO3RRmp9pDv7iTQ4aukmtN55bKmLfmUHvCRnznYJr373lLwtHl7nT8Xy5fF5fr8sGqnEUFStRnCgpQNZGqEkCiNbtKBKC-iwFSarQmtTga3yCYqVXHLWNvDODcgpuT3kbmP4GjEN9canBrvO9hjGVHMoQclSKJPRmyN0HcbY5-8yZUCB4cAyxQ5UE0NKEV29jX5j43fNWb1vsD5uMFuKgyXZFf4J_Y__AXS3a_E</recordid><startdate>20150501</startdate><enddate>20150501</enddate><creator>Bardera, R</creator><creator>Meseguer, J</creator><general>SAGE Publications</general><general>SAGE PUBLICATIONS, INC</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20150501</creationdate><title>Flow in the near air wake of a modified frigate</title><author>Bardera, R ; Meseguer, J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c342t-9d5e6f653f6387243e273dea648a6efed27f65255796a9ed264081310dc6b1763</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Aerodynamics</topic><topic>Design engineering</topic><topic>Flight decks</topic><topic>Flow velocity</topic><topic>Fluid dynamics</topic><topic>Frigates</topic><topic>Geometry</topic><topic>Hangars</topic><topic>Helicopters</topic><topic>Naval</topic><topic>Naval engineering</topic><topic>Turbulent flow</topic><topic>Wakes</topic><topic>Wind tunnels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bardera, R</creatorcontrib><creatorcontrib>Meseguer, J</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Proceedings of the Institution of Mechanical Engineers. 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| ispartof | Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering, 2015-05, Vol.229 (6), p.1003-1012 |
| issn | 0954-4100 2041-3025 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1686438247 |
| source | SAGE Complete A-Z List |
| subjects | Aerodynamics Design engineering Flight decks Flow velocity Fluid dynamics Frigates Geometry Hangars Helicopters Naval Naval engineering Turbulent flow Wakes Wind tunnels |
| title | Flow in the near air wake of a modified frigate |
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