hydrofoils &laquo; WordPress.com Tag Feed http://wordpress.com/tag/hydrofoils/ Feed of posts on WordPress.com tagged "hydrofoils" Sat, 26 Jul 2008 11:52:11 +0000 http://wordpress.com/tags/ en <![CDATA[La technique de l'Hydroptère]]> http://foils.wordpress.com/?p=115 Mon, 10 Mar 2008 16:19:13 +0000 Dr. Goulu http://foils.wordpress.com/?p=115 Viens de trouver un site un peu ancien (2002) consacré à des Travaux Pratiques Longue Durée sur "La technique de l'Hydroptère" par 9 élèves ingénieurs en 2ème année d'Hydraulique et de Mécanique des Fluides à l'ENSEEIHT (Toulouse) encadrés par deux professeurs.

Les sujets abordés sont nombreux :

  • principe des hydrofoils et historique
  • choix des profils : NACA 0015 et EPPLER 817
  • réalisation d'une petite maquette "2D" pour test de profils de foils
  • mesure de portance et trainée
  • simulations numériques avec Fluent et Xfoil
  • présentation très complète de la cavitation, avec nombreuses vidéos dont une rare de supercavitation (source inconnue):

    (regardez bien le profil horizontal : plat dessus, concave en dessous, rien à voir avec un profil "aérodynamique" classique...)

Le travail est d'excellente qualité et donne une très bonne vision globale de la problématique. Le seul reproche que je ferai est que les simulations et tests concernent des vitesses trop basses (10 m/s, 20 noeuds ...) par rapport aux challenges actuels.

]]> <![CDATA[Patmos for travelers]]> http://patmosisland.wordpress.com/2008/01/11/patmos-travel-information/ Fri, 11 Jan 2008 00:58:14 +0000 patmosisland http://patmosisland.wordpress.com/2008/01/11/patmos-travel-information/ The closest Airports to Patmos are in Samos , Kos island and Leros Island. So you book a Flight to Samos, Leros or Kos, and travel to Patmos with a Catamaran.
From these islands the fastest way to come to Patmos are the Hydrofoils and the Catamaran.
Patmos is so small it’s a good thing that there is no airport for it would be over crowded with people and the noise pollution would be annoying.
The only way to get to Patmos is by sea.
Please note that these times sometimes do change so contact the Ferry office, travel agencies or port authorities for confirmation. You can also call the PORT AUTHORITIES of Piraeus, for the boat schedules of today and tomorrow to all islands in Greece.
Ferries leave from Gate E1 in Piraeus port daily. Gate E1 is for islands of the Dodecanese, to which Patmos belongs.
Tickets for all ferries are available from the corresponding kiosks across from the boats at the port . Do try to be there early , as some people miss their boats due to queuing for tickets.
For Blue Star Ferries timetables and price visit www.bluestarferries.gr
G.A ferries www.gaferries.gr usually leave between 13.00-15.00 hours.
Timetables are available only for the full tourist season of July – August. They are usually issued late June. These times sometimes change so call the Ferry office to confirm for the boat schedules of today and tomorrow to all islands in Greece.
Flying dolphins
From there you can catch a flying dolphin (hydrofoil) or a small private vessel. Caution: When the wind speed reaches 6-7 Beaufort the flying dolphins (hydrofoils) do not leave the port they are at.
There are also small privately-owned ferry boats from different islands like Lipsi and Lerosusually doing day tours to Patmos, their times change regularly so calling the port authorities is the only way to verify their times. Call travel agencies for more, if any details.

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