Characterization of the wind flow on the flight deck of a frigate

Lopez Nuñez, Maria Elena and Raiola Rodríguez, José María and Gomez Ortega, Omar and Manzanares Bercial, Raul and Ogueta Gutierrez, Mikel and Meseguer Garrido, Fernando and Franchini Longhi, Sebastian (2019). Characterization of the wind flow on the flight deck of a frigate. In: "8th European Conference for Aeronautics and Space Sciences", 1-4 jul 2019, Madrid. https://doi.org/10.13009/EUCASS2019-326.

Description

Title: Characterization of the wind flow on the flight deck of a frigate
Author/s:
  • Lopez Nuñez, Maria Elena
  • Raiola Rodríguez, José María
  • Gomez Ortega, Omar
  • Manzanares Bercial, Raul
  • Ogueta Gutierrez, Mikel
  • Meseguer Garrido, Fernando
  • Franchini Longhi, Sebastian
Item Type: Presentation at Congress or Conference (Article)
Event Title: 8th European Conference for Aeronautics and Space Sciences
Event Dates: 1-4 jul 2019
Event Location: Madrid
Title of Book: EUCASS 2019 : 8th European Conference for Aeronautics and Space Sciences
Date: July 2019
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Aeronaves y Vehículos Espaciales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Helicopter operations in frigate-type boats can be critical depending on the sea and wind conditions. Dueto the non-steadiness and wide variations of the mean velocity, the flight envelope is limited, being theapproach to the flight deck one of the most complex and risky operations a helicopter can perform. Usually,the flight deck in the frigates is located in the stern. As a consequence, the wind flow in the surroundingsof the flight deck is highly conditioned by the wake generated by the freeboard of the boat. This wake ishighly turbulent and full of strong vortexes. These vortexes depend on the geometry of the boat upstreamthe flight deck. The correct characterization of this complex flow is related to the safety of the operationof the aircraft and allows to set the limits in which the deck can be operative or be certified. In this work,some partial results of an extensive wind tunnel test campaign are presented. In this campaign, a model ofthe frigate has been tested. The aim is to characterize the flow in the surroundings of the flight deck of thefrigate. For that, visualization tests with wool tufts and smoke, hot wire anemometry and particle imagevelocimetry (PIV) have been performed. All the tests have been done in the experimental aerodynamicsfacilities of the Instituto Universitario “Ignacio Da Riva”, belonging to the Universidad Politécnica deMadrid. Based on the information obtained in the tests, small modifications in the freeboard are suggested,in order to optimize the flow in the flight deck, which can make the approach operation easier for the pilots.

More information

Item ID: 67198
DC Identifier: https://oa.upm.es/67198/
OAI Identifier: oai:oa.upm.es:67198
DOI: 10.13009/EUCASS2019-326
Official URL: https://www.eucass.eu/2019/index.html
Deposited by: Memoria Investigacion
Deposited on: 11 Jun 2021 06:04
Last Modified: 11 Jun 2021 06:04
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