Wing in ground effect craft pdf

Pdf 27 dynamic air cushion winginground effect craft. It seems, however, a matter of time at a glance to transform a passenger craft to a polymorphic craft although it may require some tradeoffs in payload. The wig operates on aerodynamic lift and literally glides on a air cushion of about 0. Stability analysis of a wing in ground effect craft. Pdf research article experimental investigation of a.

Regarding polymorphic craft, wst needs to have a study to give you a precise answer. Research article experimental investigation of a wing in ground effect craft academic editors. It can be seen as a transition between a hovercraft and an aircraft. The aerodynamic characteristics of the winginground effect wig craft model that has a noble configuration of a compound wing was experimentally. Wigs wing in ground are advanced hybrid air cushion crafts and they offer the.

The aerodynamic characteristics of the wing in ground effect wig craft model that has a noble configuration of a compound wing was experimentally investigated at universiti teknologi malaysia. For fixed wing aircraft, ground effect is the increased lift and decreased aerodynamic drag that an aircrafts wings generate when they are close to a fixed surface. German 1977 ground effect craft, designed to operate over water but capable of flight at higher altitudes where required, carrying five or six passengers or freight build ground effect plane yahoo image search results sugar daddy dating website date sugar daddies world wide wing in ground effect craft a sort of lowflying aircraft. The report also attempts to outline the performance characteristics of wig craft and the operational limitations that might be found on developed wig. Despite this wigs have never enjoyed great commercial or military success. A wig craft utilizes ground proximity effects to improve aerodynamic loading and efficiency. Ground effect one of the most misunderstood aerodynamic effects is called ground effect. It is the phenomena when an airfoil is operating close to a boundary such as the ground or water. The hoverwing, designed first as a normal hovercraft, is. Wig craft data sheets hoverwing wig craft technology.

This should demonstrate that most of the ground effect happens when the ram pressure below the wing builds up. The aerodynamic characteristics of compound wings were numerically investigated during the ground effect. They illustrated the ground effect caused a reduction in the tip vortex and the wake following the wing, as shown by the smoke trace test. These craft should therefore be included in the surface platform sections of the naval order of. A lifting system that has increased lifttodrag ratio due to flying very near to the ground is termed as. Wartsila is a global leader in smart technologies and complete lifecycle solutions for the marine and energy markets. When landing, ground effect can give the pilot the feeling that the aircraft is floating. Due to the efficiency and their classification as fast vessels, wing in ground crafts have the potential to become favored transport vehicles for mean distances in. View wing in ground effect craft research papers on academia. Pdf technology developments for wing in ground effect craft. It has the abilities of snow surface take off and maneuvering at the coast line with use of props power. While the pelican is yet to become a prototype the concept is hardly a new one.

These craft are supported in their main operational mode solely by aerodynamic. My first experiments into ground effect began with a simple lippisch reversedelta model mk1 powered by a model aircraft cox 049 engine figure 2. Experimental investigation of a wing in ground effect craft. Classification of wingingr ound effect wig craft subject. Feb 16, 2014 wing in ground effect is quite a new concept of designing fast ships, which has vast relevance in numerous areas such as transportation of cargo, tourism, rescue operations, and military functions. The ge is a phenomenon where aerodynamic, aero elastic and aero acoustic impact on a body that. Ground effect craft technology will be of interest to naval engineers, aviation engineers, naval architects, and mechanical engineers interested in the development and research of wing in ground wig and high performance marine. The vehicles which are considered in this study are the wingingrounde.

A wing in ground wig craft is defined as a vessel capable of operating completely above the surface of the water on a dynamic air cushion created by aerodynamic lift due to the ground effect between the vessel and the waters surface. Wing in ground effect craft are becoming promising transportation over the last decade. The lift increases due to the ground effect at low ground clearance when the. Wig catamaran, wing in ground effect, aerodynamic characters, naca 6409, cfd analysis. Design of a hoverwing aircraft presented to mechanical and. While some believe that it will bring a new era of high speed marine transportation, others believe it holds less promise than the hovercraft. Wig craft bd12g on 75 % is composite boat, 25 % of the parts power elements of the body are aluminum. The boeing pelican ultra is intended as a largecapacity transport craft initially for military use, with possible subsequent availability as a commercial freighter serving the worlds largest cargo. Pdf stability analysis of a wing in ground effect craft. A great range of wing in ground effect craft wigs have been manufactured ranging from 2 seat recreational vehicles to 500 tonne warcraft.

When taking off, ground effect may temporarily reduce the stall speed. A wing in ground wig craft is a marine craft equipped with wings which enables it to remain airborne just above the water surface. Retrospective theses and dissertations iowa state university capstones, theses and dissertations 1994 design of a wing section in ground effect. Introduction wing in ground wig effect craft are unique vehicles that operate at altitudes of several metres above the sea surface to take advantage of favourable aerodynamic interactions between the wing and ground.

You can see that ground effect doesnt come into play until youre within 1 wingspan of the ground. The performance of a winginground effect c raft depends mostly on its wing configuration. The bixel wig is a ground effect vehicle, or wing in ground effect vehicle, designed in the last century by charles bixel, who sadly passed away not long ago. Pdf a wingingroundeffect wige crafts can be deployed to fly by utilizing the ground effect, which is a natural phenomenon known to improve the. The hainan yingge wing in ground effect craft manufacturing company in hainan, china, tested two prototype sea planes off the coast of haikou that have been developed in. Wig craft and ekranoplan ground effect craft technology liang. It has long been recognised that flight close to a boundary surface is more aerodynamically efficient than flight in the free stream. The unique design allows it to avoid contact with water a medium 800 times heavier than air and its strong yet light composite fibre body allows longer durability than most marine crafts.

Specifications of wsh500 wing span overall with winglet 27. A groundeffect vehicle gev, also called a wingingroundeffect wig, groundeffect craft, wingship or ekranoplan russian. Chinese cyg11 craft that can fly or float on a cushion. Here the wing is so close to the ground that the trailing edge of the wing is creating a sealed envelope. Halloran, sean omeara published 2000 it has long been recognised that flight close to a boundary surface is more aerodynamically. Wing in ground effect craft or wig craft is a vehicle flying above the ground or water surface with an altitude lower than its wing chord. The lift off aid developed by fischer flugmechanik for the second wig craft generation hoverwing is an air cushion which is created by a part of the propeller stream under. This effect is a consequence of the distortion of the airflow below such surfaces attributable to the proximity of the ground. Experimental investigation of the ground effect of wig craft. The watersports and leisure groundeffect craft that provides a unique experience gliding over the water using the wingingroundeffect on the speed up to 110 kmh. Wing in ground effect craft the concept and the market. Compare to others wig crafts, this model is constant steady and high in stability movement with the wing in ground effect. A great range of wing in ground effect craft wigs have been manufactured ranging from 2 seat recreational vehicles to 500 tonne.

It fills the technological gap between conventional aircraft and ships. Aircraft normally fly in a freestream, that is the air around the wing is not bounded in any way. A wig craft, like the pelican, sits on a cushion of air created by aerodynamics rather than by an engine. Research article experimental investigation of a wing in ground effect craft m. Ahmed, 1,2 saeedjamei, 1,2 agoespriyanto, 1,2 andrahimuddin 2. Experimental investigation of a winginground effect craft. How close to the ground do you need to be for ground effect.

Aerodynamic characteristics of wing of wig catamaran. The following is a list of wig or wing in ground effect craft, also referred to as waterskimming wingships or, in russia, ekranoplans. Airfish 8 af8 product video wing in ground effect wig craft flying boat wigetworks. My first experiments into groundeffect began with a simple lippisch reversedelta model mk1 powered by a model aircraft cox 049 engine figure 2. The fact is that if the height to chord length of the aircraft is too small, the developing boundary layers from either side of the surface ground and wing can interact, leading to a choked flow. Ground effect can be divided up into two distinct regimes, ram and normal ground effect 1.

Since then, a large quantity of related research has been carried out, and a better understanding of this phenomenon has been gradually achieved. This has led to the design and construction of craft specifically intended to operate close to the ground and fly in ground effect. Pdf experimental investigation of a winginground effect. Par flight leaves a wake on the surface of the water where it has been blown by the fans. Pdf experimental investigation of a winginground effect craft. Computational aerodynamics and flight stability of wingin.

By emphasising sustainable innovation, total efficiency and data analytics, wartsila maximises the environmental and economic performance of the vessels and power plants of its customers. Mar 06, 2008 a wing in ground effect vehicle wig, is a vehicle that cruises little more than a few feet over flat surfaces, most often water. Aerodynamic characteristics of wing of wig catamaran vehicle. Research article experimental investigation of a wingin. Wig craft make use of a phenomenon known as ground effect. This sea craft looks like a plane, has a cars engine, and docks like a boat duration.

It has long been recognised that flight close to a boundary surface is more aerodynamically efficient than flight in the freestream. A wing in ground effect wige crafts can be deployed to fly by utilizing the ground effect, which is a natural phenomenon known to improve the efficiency of airplanes during takeoff and landing. The boeing pelican ultra ultra large transport aircraft was a proposed ground effect fixed wing aircraft under study by boeing phantom works. This report provides the theory of the efficiency of wings operating in ground effect and the historical background to the development of wig craft. Computational analysis of aerodynamic characteristics for wing in. Technology developments for wing in ground effect craft spyros hirdaris and mark guerrier lloyds register strategic research group, uk dominic hudson. In full ground effect flight, the disturbance behind the boat has virtually disappeared figures 811. Once the trailing edge is less than half the wing chord from the ground, this part of ground effect kicks in, and the aircraft sees a significant reduction in drag. The aerodynamic characteristics of the winginground effect wig craft model that has a noble configuration of a.

The difference between par and ground effect flight can be clearly seen. The flow around a wing in ground effect craft flying at alpha 3 deg and alpha 9 deg over flat and wavy ground is simulated and investigated by using ansys fluent, employing the compressible. Ram ground effect occurs where the wing is at an altitude of hc0. Wig craft gives an alternate solution to gain higher speed. Pdf project reportdesign optimization and fabrication. Pdf wing in ground effect craft are becoming promising transportation over the last decade.

Ground effect is the name given to the positive influence on the lifting characteristics of the horizontal surfaces of an aircraft wing when it is close to the ground. The vehicles which are considered in this study are the wing in ground e. Wing in ground effect craft research papers academia. Wing in ground effect wig not to be confused with ground effect in auto racing explained in this article aircraft may be affected by a number of ground effects, or aerodynamic effects due to a flying bodys proximity to the ground. Wig craft and ekranoplan ground effect craft technology. Pdf numerical study of aerodynamics of a winginground.

In many general aviation airplanes this effect produces greater lift and less drag for a given angle of attack. The wing encompasses a winglet at the end of the wingtip. Wig bike craft 3seater the watersports and leisure ground effect craft that provides a unique experience gliding over the water using the wing in ground effect on the speed up to 110 kmh. The maritime platform division of the aeronautical and maritime research laboratory, dsto has been tasked. Some of the benefits of wig craft include high speed operation compared to traditional marine craft, improved payload and aerodynamic. The hoverwing, designed first as a normal hovercraft, is unique because of the ability to add wings for flight in ground effect. Many researchers have had some successful attempts to develop wig crafts that fly near sea surface. The ge is a phenomenon where aerodynamic, aero elastic and aero acoustic impact on a.

This paper presents a wing in ground effect craft design as an alternative to the current ships, a means of faster and safer transportation. Wing in ground ef fect is quite a new concept of designing fast ships, which has vast relevance in numerous areas such as transportation of cargo, tourism, rescue operations, and military functions. Introduction wing in ground wig effect transportation vehicles have attracted considerable attention in view of their potential civil and military applications. Pdf technology developments for wing in ground effect. The lippisch configuration was chosen because of its supposed greater inherent stability when moving between in ground effect ige and out of ground effect oge. For decades the russians have experimented with aircraft they called wig wing in groundeffect planes. This has led to the design and construction of craft specifically intended to operate close to the ground and fly in. Starting with definitions of the phenomenon and the craft which takes advantage of the ground effect ge, the history and perspectives of the technology, specific vehicles and projects, and areas of application are covered. After an in depth study of the matter, the weapon and space systems intelligence committee has concluded that the soviet wing in ground effect wig craft should be classified and designated as naval surface platforms.

During cruise, the craft was able to jump up for a short time in order to avoid obstacles. If youve flown a low wing and high wing airplane, you know that low wing planes experience a lot more ground effect during landing. Part boat, part hovercraft, when travelling at speed this craft generates enough lift from its stub wings to fly 15 to 30 centimeters above the water. By leaving the ground effect during the jump the aerodynamic drag increases, which reduces speed andmakes the craft return into ground effect automatically. The aquaglide is a fiveseat wing in ground effect vehicle powered by a gasoline engine. Analysis of wingingroundeffect vehicle with regard to safety. Ground effect one of the most misunderstood aerodynamic.