
	Where results make sense

Topic: Hydrofoil

Related Topics

Foilboard

Turbojet Ferry

Nautical engineering

Ferry

Hydroplaning

Alexander Graham Bell

Water taxi

Pegasus class hydrofoil

Jetboat

Hovercraft

Boat

Gramophone

Sailing

Propeller

United States Navy

	Hydrofoil Basics
		Hydrofoil is also used to refer to the boat to which the water wings are attached.
		Hydrofoils lift the hull out of the water so that you only have to overcome the drag on the foils instead of all of the drag on the hull.
		The hydrofoils generate lift only when they are in the water; if they leave the water, the boat will crash down onto the surface of the water (and thus submerge the foils) until the foils generate enough lift to lift it back out.
	lancet.mit.edu /decavitator/Basics.html (642 words)

	2.972 How a Hydrofoil Works
		Hydrofoil (It is a foil or wing under water used to lift the boat’s hull until it is totally outside the water.)
		On the contrary, small angles of attack are used on hydrofoils to optimize the lift to drag ratio as explained before.
		Every day more hydrofoils are used, and in the future, they may be the dominate method of sea traveling.
	web.mit.edu /2.972/www/reports/hydrofoil/hydrofoil.html (931 words)

	Man-propelled hydrofoil boat - Patent 4349340
		Hydrofoil 24 is similarly constructed and biased, being pivotally supported on struts 65 and 66 and having a control tab 82 and an end tab extended as a lever 77a.
		Hydrofoils 22, 23 and 24 and their mounting struts 63, 64, 65, 66, 110 and 111 are so chosen that the upper ends of the hydrofoils project above the surface of the water when the vehicle is in motion.
		The high speed hydrofoils also become less submerged, slightly decreasing their lift, but that decrease is more than overcome by the increase due to increased vehicle speed, so that at nine miles per hour the high speed hydrofoil supports most of the weight of the vehicle.
	www.freepatentsonline.com /4349340.html (4395 words)

	Swimming pool vacuum cleaner hydrofoil - Patent 4776053
		Hydrofoils 36 and 38 will be in the position shown in solid lines when the vacuum head is at rest and when it is moving backward because handle 18 is being pulled.
		Hydrofoils 36 and 38 will pivot upwardly to abut pivot limiters 32 and 34 respectively, when the vacuum head is moving forward because handle 18 is being pushed.
		Hydrofoils 36 and 38, however, produce a downward thrust which keeps vacuum head 10 on the pool surface in the proper attitude for maximum efficiency.
	www.freepatentsonline.com /4776053.html (1915 words)

	Four dead aboard hydrofoil after collision - World - smh.com.au
		The hydrofoil was crumpled on one side, near the pilot's cabin, with the middle of the roof smashed inward.
		The hydrofoil, packed with workers and university students heading home for the day, was approaching Messina after crossing the Strait of Messina from Reggio Calabria when the collision occurred.
		Hydrofoils are fast-moving, motorised craft that skim over the sea's surface thanks to flat or curved finlike devices attached by struts to the hull, which lift up the vessel.
	www.smh.com.au /news/world/four-dead-aboard-hydrofoil-after-collision/2007/01/16/1168709724410.html (635 words)

	Hydrofoil
		A hydrofoil is a boat with wing-like foils mounted on struts below the hull.
		These hydrofoils were fast and well armed, and were capable of sinking all but the largest surface vessels.
		In their narcotics interdiction role, they were a nightmare for drug runners, being very fast, and having missiles and guns to stop anything they could not catch, as well as the ability to call in air support.
	www.xasa.com /wiki/en/wikipedia/h/hy/hydrofoil.html (471 words)

	Hydrofoil Summary
		The hydrofoil is very similar to the hovercraft, because it moves in the boundary between air and water.
		The term "hydrofoil" is also used to refer to the foil itself, especially when the airfoil profile has been specifically designed for use in water (such as for a propeller blade).
		Former Russian hydrofoils are used in southern Italy for connection with islands of Latium and Campania.
	www.bookrags.com /Hydrofoil (1663 words)

	The Lake Channel: High Flying Hydrofoilers
		Of all the towed water sports, Hydrofoiling causes the least drag and pull on the body, therefore it is not as tiring.
		They based their design on ideas they got from standup hydrofoil skis, which were developed and patented by Lucas Emmanual in the early 1960s.
		Hydrofoilers can ride for long amounts of time because it is easy to ride, and they can use it in just about any type of water conditions.
	www.thelakechannel.com /wakezone/high_flying_hydrofoilers.htm (1068 words)

	Paipo Hydrofoil (Site not responding. Last check: )
		On the hydrofoil board, the induced drag has the same factor of increase, but as the induced drag is a much smaller fraction of the total drag to start with, the increase in total drag is much less (and the loss of speed is much less).
		A combination of direct measurements, and modeling of the hydrofoil hydrodynamics on the face of a wave, indicates that for a 4' wave the hydrofoil board should trim across the face of the wave at a speed that is about 12 percent higher than a state-of-the-art conventional board with a planing hull.
		However, as the initial induced drag is so small with the hydrofoil board, compared with the planing hull board, the total drag undergoes a much larger increase for the planing hull board than it does for the hydrofoil board.
	www.rodndtube.com /paipo/hydrofoil/paipo_hydrofoil.shtml (2099 words)

	hydrofoil. The Columbia Encyclopedia, Sixth Edition. 2001-05
		Like an aircraft wing in its appearance and function, the foil develops lift as it passes through the water; the hull is raised above the surface, and the drag caused by the vessel’s contact with the water is thereby reduced.
		Hydrofoil vessels are capable of traveling faster than 70 mi (113 km) per hr.
		On oceangoing passenger ships a type of hydrofoil called a stabilizer is used to minimize wave action on the vessel.
	www.bartleby.com /65/hy/hydrofoi.html (269 words)

	Interesting Hydrofoil Facts
		The first evidence of the use of a hydrofoil on a boat or ship was in a British patent granted to Emmanual Farcot in 1869.
		Today hydrofoils are used on power boats, sailboats and sailboards to reduce drag while increasing speed and efficiency.
		Hydrofoiling claims the record for the biggest air behind a boat (except off a jump ramp) at well over 23 feet.
	www.skyski.com /htmfiles/facts.htm (291 words)

	Development of a hydrofoil sailing dinghy
		The forward hydrofoil was a surface piercing Vee shaped foil and the aft hydrofoil, which also served as a rudder, was an inverted Tee shape.
		The forward hydrofoil as originally constructed was a Vee shape with a small vertical fin protruding from the bottom of the Vee.
		Also, with the hydrofoil configuration that I am using, part of the weight is carried on a surface piercing hydrofoil which is known to be less efficient than the fully immersed type.
	www.btinternet.com /~sail/boatbuild02.htm (7079 words)

	Welcome to USHA
		Mike came up with the idea that if he took the hydrofoil and put it on a knee board, it would solve the problem of kneeboards with a smoother ride and the biggest problem of stand-up skis being too sensitive to forward and backward motion by lowering the center of gravity.
		Mike and Bob were hydrofoiling on the river, Bob with his new seated hydrofoil and Mike with his stand-up two ski hydrofoil.
		There is a hydrofoil designed for surfing which is a smaller than average surfboard with snowboard boots attached to it and this hydrofoil is used to ride the ocean waves for miles.
	www.hydrofoil.org /history.html (1630 words)

	Compare Prices and Read Reviews on Hydrofoil Voyager : Williwaw, from Dream to Reality, and Toward the Sailing Yacht of ...
		Read, and you are there, thrilled as the hull surges up to sprint on its foils; impatient as the sea goes flat in a dying wind; inventive as some new crisis presents itself for a solution hundreds of miles from land.
		Hydrofoil Voyager is rich with hard-earned insight on how to design, build, and sail your own boat, hydrofoil or not.
		Please note that this review is an update of the text originally published by this author in the International Hydrofoil Society newsletter, and currently posted on the IHS website, of which I was the webmaster until recently (see http://www.foils.org/williwaw.pdf).
	www.epinions.com /content_122592202372 (650 words)

	* Hydrofoil - (Boating): Definition
		HYDROFOIL - A craft more or less similar to the Hovercraft insofar as it flies over water and thus eliminates friction between the water and the hull.
		HYDROFOIL - A vessel that has foils under it's hull onto which it rises to plane across the water surface at high speed in more comfort.
		Stall- The condition that arises when the airfoil (sail) or hydrofoil (rudder) is turned too far off and the flow of air and water separates from the foil; there is no longer attached flow.
	en.mimi.hu /boating/hydrofoil.html (206 words)

	Human-powered hydrofoil seeks jumpy riders - mech-tech - 23 May 2005 - New Scientist (Site not responding. Last check: )
		It has two hydrofoils, a large rear one that generates 80% of the lift, and a smaller one at the front for steering and stability.
		Hydrofoils enable a vehicle to move through water using less energy than an ordinary boat.
		This means if the rider stops bouncing or falls off, the craft lowers into the water and they must swim back to the launch point, towing it in their wake.
	www.newscientist.com /article.ns?id=dn7414 (490 words)

	Alexander Graham Bell and the Hydrofoils [1906-1921] (Site not responding. Last check: )
		As the speed of a hydrofoil boat increases, the submerged hydrofoils raise the hull until it leaves the water entirely, supported by the vertical stanchions to which the hydrofoils are attached.
		Since the ratio between horizontal and vertical forces is fixed by the angle at which the hydrofoils are set, the horizontal force-the resistance to forward motion-likewise tends to be kept constant by hydrofoil "reefing" as speed increases; whereas the resistance of a conventional boat increases as the square of the speed.
		Though the hydrofoil sailboat dream died in 1914 after a second summer of fruitless trials, the outbreak of the European war that August lengthened the hydrodrome moratorium by two years.
	www.lesliefield.com /other_history/alexander_graham_bell_and_the_hydrofoils.htm (1555 words)

	Hydrofoils - A Hydrofoil may be the answer.A Piranha hydrofoil/stabiliser from Boat Propellers Australia will lift the ...
		Hydrofoils - A Hydrofoil may be the answer.A Piranha hydrofoil/stabiliser from Boat Propellers Australia will lift the stern faster.
		The anti-vortex tips have also been added to the ends of the hydrofoil to increase lift as well as reduce unwanted steering torque during acceleration.
		Made of Verton¨, the same high strength material used to produce quality composite-modular propellers, the hydrofoil is incredibly strong and non-corrosive.
	www.boatpropellersaustralia.com.au /hydrofoil.htm (255 words)

	Hydrofoil Hall of Fame
		From his first time on the water with his new hydrofoil Bob immediately started teaching everyone he knew how to ride one of these crazy things.
		The results are more hydrofoilers in Colorado per capita than anywhere on the planet.
		Catalina called to Mary again, and at age 79 she made the crossing by hydrofoil in just over one and a half hours.
	www.skyski.com /htmfiles/hall.htm (1154 words)

	4 dead aboard hydrofoil after collision off Sicily - USATODAY.com (Site not responding. Last check: )
		From survivors' accounts and images of the craft as it was being towed toward the dock, it appeared the hydrofoil had been struck in the side by the container ship.
		The hydrofoil was crumpled on one side, near the pilot's cabin, with the middle of the roof smashed inward.
		Hydrofoils are fast-moving, motorized craft that skim over the sea's surface thanks to flat or curved finlike devices attached by struts to the hull.
	www.usatoday.com /news/world/2007-01-15-sicily-accident_x.htm (494 words)

	What is a Hydrofoil?
		A hydrofoil, not to be confused with a hovercraft, is a waterborne vessel that uses underwater wings to generate lift in the same way that a plane uses wings to generate lift in air.
		Interestingly enough, this hydrofoil was built by telephone inventor Alexander Graham Bell in 1908, after he became interested in hydrofoils.
		Pegasus class hydrofoils served in the U.S. Navy between 1977 and 1993, where they were used to suppress the trade of narcotics.
	www.wisegeek.com /what-is-a-hydrofoil.htm (454 words)

	Hydrofoil trips between Budapest and Vienna (Wien) on the River Danube
		Budapest - Vienna, Vienna - Budapest by Hydrofoil
		Hydrofoil service on the Danube from Budapest to Vienna (282 km, 5 and 1/2 hours) and Budapest to Bratislava (221 km, 4 and 1/2 hours) operates daily from April to October.
		In so far as the vis major nature doesnot make it possible for the hydrofoil company to fulfil their transport obligation even by the utilisation of other types of vehicle transport, they are relieved of this obligation and are obliged to refund the fare without any deduction.
	www.budapesthotels.com /touristguide/mahart.asp (580 words)

	The Rave Hydrofoil
		The complexity of the hydrofoil boat arises from the fact that it sails under all the speed barriers at different times and is able to overcome all but cavitation at different times.
		Hydrofoil boats need to sail flat to give the wings the proper angle of incidence in the water.
		Andy and Wilderness Systems have taken a far superior approach by using the roto molded polyethylene to keep the water out of the boat or to "float the boat." The structural integrity, and tremendous stress loads of the RAVE hydrofoil are taken by an aircraft aluminum tubing structure which is both simple and strong.
	www.sailingbreezes.com /Sailing_Breezes_Current/Advertisers/Rave/rave_redefining.htm (2358 words)

	Company History
		Hydrofoils are the safest means of transportation bar none.
		Hydrofoils have been used, primarily as ferries, on waterways in Europe and Asia.
		The principle of a hydrofoil is identical with that of an airplane wing (an airfoil) moving through air Water is 815 times denser than air, however, and therefore a hydrofoil can be much smaller than an airplane wing to give the same amount of lift.
	www.hydrofoil.com /hitest/reference.html (1388 words)

Try your search on: Qwika (all wikis)