Institut de Recherche de l’École navale (IRENAV): Recent submissions

Now showing items 57-63 of 271

    • Experimental and numerical trimming optimizations for a mainsail in upwind conditions 
      Communication avec acte
      SACHER, Matthieu; ccHAUVILLE, Frederic; DUVIGNEAU, Régis; LE MAITRE, Olivier; AUBIN, Nicolas; DURAND, Mathieu (2016)
      This paper investigates the use of meta-models for optimizing sails trimming. A Gaussian process is used to robustly approximate the dependence of the performance with the trimming parameters to be optimized. The Gaussian ...
    • Optimisation de la loi de calage d’un propulseur cycloïdal 
      Communication avec acte
      ccHAUVILLE, Frederic; LECUYER-LE BRIS, Romain; DENISET, François; FASSE, Guillaume (2018)
      Les propulseurs cycloïdaux sont caractérisés par la rotation de plusieurs pales autour d’un axe vertical, associée à un mouvement de chaque pale autour de son axe propre. L’objet de cet article concerne l’étude des lois ...
    • Wind tunnel investigation of dynamic trimming on upwind sail aerodynamics 
      Communication avec acte
      AUBIN, Nicolas; AUGIER, Benoit; SACHER, Matthieu; FLAY, Richard G.J.; ccBOT, Patrick; ccHAUVILLE, Frederic (2016)
      An experiment was performed in the Yacht Research Unit’s Twisted Flow Wind Tunnel (University of Auckland) to test the effect of dynamic trimming on three IMOCA 60 inspired mainsail models in an upwind (AWA = 60 ) unheeled ...
    • Remote blue whale call detection using a passive version of the stochastic matched filter paper 
      Communication avec acte
      BOUFFAUT, Léa; DREO, Richard; LABAT, Valérie; ccBOUDRAA, Abdel-Ouahab; BARRUOL, Guilhem (2017)
      More than 30 years after the institution of the moratorium on commercial whaling by the International Whaling Commission, one of the biggest challenges in whale monitoring, e.g. Antarctic Blue Whales (ABW), is assessing ...
    • How to be the best at sail pumping? 
      Communication avec acte
      AUBIN, Nicolas; DHOME, Ulisse; AUGIER, Benoit; ccBOT, Patrick; ccHAUVILLE, Frederic (2016)
      Pumping or flicking1 is often used by sailors to get extra propulsion while sailing (subject to restrictions by the racing rules2). Common unsteady sailing situations, due to crew action (e.g. manoeuver like gybing3) or ...
    • Antartic blue whale localization with ocean bottom seismometers in southern indian ocean 
      Communication avec acte
      DREO, Richard; BOUFFAUT, Léa; GUILLON, Laurent; LABAT, Valérie; BARRUOL, Guilhem; ccBOUDRAA, Abdel-Ouahab (2017)
      While visual survey of whales requires substantial means for limited areas, passive acoustic monitoring (PAM) offers larger scale coverage for long periods and less costs. It usually provides information about species ...
    • Modal Analysis of Pressures on a Full-Scale Spinnaker 
      Communication avec acte
      DEPARDAY, Julien; AUGIER, Benoit; RABAUD, Marc; MOTTA, Dario; LE PELLEY, David; ccBOT, Patrick; ccHAUVILLE, Frederic (2016)
      While sailing offwind, the trimmer typically adjusts the downwind sail "on the verge of luffing", letting occasionally the luff of the sail flapping. Due to the unsteadiness of the spinnaker itself, maintaining the luff ...