Wig craft and ekranoplan ground effect craft technology pdf

Feb 09, 2008 wig craft reduces the fuel cost by up to 75%, becos of its fuel efficieny while it is in ground effect. A study on performance of planingwing hybrid craft core. Jul 03, 2011 during the development of airfish8, it was attempted to receive a classification for this ground effect craft as a ship, which finally led to the success airfish8 is certified now. A wig craft utilizes ground proximity effects to improve aerodynamic loading and efficiency. As an aircraft flies closer to the ground, air pressure builds between the.

An optimization technique was used to generate a wingin ground effect wig configuration which can achieve the maximum lift and satisfy the height stability criteria within the design constraints. This is likewise one of the factors by obtaining the soft documents of this wig craft and ekranoplan ground effect craft technology by online. Speeds of wig craft are much higher than those of ground effect machine gem is a high speed low altitude flying ships, and operational expenses are much lower than those of vehicle that. Mar 03, 2010 the history of \in ground effect wing\ craft or ekranoplans is long and colourful, the soviets having taken it to extremes in the interests of coldwar advantage. A wingin ground wig craft is a marine craft equipped with wings which enables it to remain airborne just above the water surface. It fills the technological gap between conventional aircraft and ships. Wig craft and ekranoplan liang yun alan bliault johnny doo wig craft and ekranoplan ground effect craft technology 123 liang yun marine design and research institute of china maric 1688 xizhang nan road 200011 shanghai peoples republic of china email protected alan bliault as norske shell 4098 tananger norway email protected johnny doo teledyne continental motors 2039 broad. The airfish 3 af3 is a 2seater wig craft capable of operating in ground effect at about 1 to 2 metres above water. The last wig russian designs like skb and marine passenger ekranoplan mpe designed. Wigcraft flight control concept for the waved sea doi. Our aim in this chapter is to introduce the reader to the wig development programmes carried out in a number of countries in the last half of the twentieth century and up to date, so as to give a historical perspective on the origins of the technology. Complex flow for winginground effect craft with power.

See more ideas about ground effects, flying ship, grounds. The term ekranoplan refers to the russian for screen plane or low flying plane and is. Pdf it has long been recognised that flight close to a boundary surface is more aerodynamically. For the analysis of the aerodynamic coefficients, the vortex lattice method vlm was applied with the inviscid and potential flow approximations. Wig craft and ekranoplan ground effect craft technology liang. Download pdf did you struggle to get access to this article.

World heritage encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled. Pdf a study on estimation of propulsive power for wing. A great range of wing in ground effect craft wigs have been manufactured ranging. Wig craft and ekranoplan liang yun alan bliault johnny doo wig craft and ekranoplan ground effect craft technology 123 liang yun marine design and research institute of china maric 1688 xizhang nan road 200011 shanghai peoples republic of china email protected. Unlike most wig s this one would be land based and not capable of landing on water, and it would be capable of flying at medium altitudes 25,000 ft. Typically, it is designed to hover over a level surface usually. Longitudinal static stability requirements for wing in ground effect vehicle. Furthermore, the influence of endplate on lift force for smaller aspect chawla et al. The lunclass ekranoplan also called project 903 is a ground effect vehicle gev designed by rostislav alexeyev in 1975 and used by the soviet and russian navies from 1987 until sometime in the late 1990s. Aerodynamic and static stability characteristics of. Aeronumeric optimal design of a wingingroundeffect craft. A winginground wig craft or also known as winginsurface effect wise craft is a marine trans. Wig technology is at a very early stage and covers wide range of craft.

Shape optimization of an airfoil in ground effect for. Aerodynamic study of wig craft near curved ground sciencedirect. External aerodynamic study on wing in ground effect wig. Ground effect on the aerodynamics of a naca 0015 airfoil with.

Isbn 9781441900425 digitally watermarked, drmfree included format. Ground effect craft technology provides a comprehensive overview of the design, development and building of wig vessels. In the last halfcentury, highspeed water transportation has developed rapidly. Wig rides above the surface like an airplane on a dynamic ai. Wig crafts can fly proximity the any surface such as ground, sea, snow and ice etc. Numerical study of the aerodynamics of a naca 4412 airfoil. A groundeffect vehicle gev, also called a wingin ground effect wig, ground effect craft, wingship, flarecraft or ekranoplan russian.

A great range of wing in ground effect craft wigs have been. The first buyer of tianyi1 used the vehicle to carry tourists around lake tai. Ekranoplan project gutenberg selfpublishing ebooks. Wig wing in ground effect craft creative journey return of the wig a ground effect vehicle gev is one that attains level flight near the surface of the earth, made possible by a cushion of highpressure air created by the aerodynamic interaction between the wings and the surface known as ground effect. Wig craft reduces the maintainence cost as the craft is made of composite fiber, and is. Wigcraft flight control concept for the waved sea eucass. Wig craft and ekranoplan ground effect craft technology. Aerodynamic and static stability characteristics of airfoils.

The russian navy tested the concept during the cold war. Wingtip vortices create an additional drag on the aircraft known as the induced drag. Wing in ground wig effect crafts are unique vehicles that operate at speeds in excess of 100knots. What are the engineering challenges in wig craft development. Oct, 2019 the missing speed gap between 10 mph the upper limit for a wig craft as a boat and 50 mph the lower limit of a wig craft in ground effect severely inhibits wig crafts utility. Aug 27, 2020 the ekranoplan was the soviet unions attempt to build a craft capable of exploiting the wing in ground effect wig. Pdf the wingin ground effect wig craft, which lies between a seagoing. Wig craft is a new marine transport that is developed according to aircraft environment the wing in ground wig craft also called ekranoplan or application. A wingin 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 paper presents the analysis of unsteady forces and their influence on the aerodynamics and motion of a wingin ground wig effect craft. Jan 01, 20 a wingin ground wig craft is a marine craft equipped with wings which enables it to remain airborne just above the water surface.

New zealands homemade hoverwing flies 5 feet above water. Ground effect on the aerodynamics of a naca 0015 airfoil. Twodimensional and threedimensional aerodynamic models based on the potential flow are coupled with time domain simulations in the longitudinal plane. The concept of ground effect and its use to a wing in ground effect marine vessels is a result of several research efforts in the marine transport technology development sector of the global maritime industry 1. Design of a hoverwing aircraft san jose state university. Introduction b wing span the wingin ground effect wig crafts are c chord length classified as a middle form between ships and cl lift coefficient aircrafts. However, when the flying craft or bird flies close to the ground or water, these vortices dont get enough space to develop which results in additional lift and reduced drag. It is connected with stability and control systems, aerodynamics of landing and take off also sea state of civil and military ground effect craft named also wigs wing in ground effect or ekranoplanes airfoil development gmbh afd was certified in late 90. The lunclass ekranoplan also called project 903 is a ground effect vehicle gev designed by rostislav alexeyev in 1975 and used by the soviet and russian navies from 1987 until sometime in the late 1990s it flew using the lift generated by the ground effect of its large wings when within about four metres ft above the surface of the water. Experimental investigation of the ground effect of wig craft.

Sea eagle wig wise wing in ground effect craft commerclized. Building ekranoplan wig models presented at eages 2001 international ground effect symposium. The problems mentioned above are not the main barrier for a sustainable development of wig technology. Ground effect craft technology provides comprehensive overview of the design, development and building of wig vessels. Nov 09, 2020 a wingin 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.

South koreas armed forces have already agreed to buy some and the firm says it hopes to announce its first commercial sales to an oilandgas firm and a mediterranean ferry company shortly. Epub, pdf ebooks can be used on all reading devices immediate ebook download. Ground effect craft technology 2010 by yun, liang, bliault, alan, doo, johnny isbn. Aerodynamics and flow features of wig craft with and without course angles in. The results show that the stall angles decrease from 12 degree to 9 degree when the wig craft fly closer to the ground surface while the maximum lift coefficient clmax is around 1. In 2000, the model is for commercial sale in china. The af3 is highly manoeuvrable and easy to handle, making it an ideal recreational craft or use as a trainer for bigger wig craft. Wingin ground wig craft is the official term of this kind of flying ship using ground effect and is also known as an ekranoplan russian for screen plane or. This phenomenon has been effectively used in transportation vehicles to create.

Typical wing arrangements of the wing in the ground effect craft 3. Sea eagle wig craft sixseater wingin ground effect craft. Everyday low prices and free delivery on eligible orders. A study on estimation of propulsive power for wing in ground. See more ideas about ground effects, flying ship, flying boat. The adoption of wig has been slow due to the complicated technology issues surrounding the vessel. A special attention is paid to the explanation of the dynamic ground effect on both the sink and.

Pdf technology developments for wing in ground effect craft. Computational aerodynamics and flight stability of wingin. Ekranoplans, wing ingroundeffect wig, flare craft, sea skimmer, or wingin. On unsteady effects in wig craft aerodynamics hindawi. Apr 24, 2015 the wing ship technology corporation, a south korean company, is trying to revive the wing in ground effect idea. Wig craft and ekranoplan ground effect craft technology pdf. The airfish 3 is not commercially available on the market yet. Cl and cd of the wig craft in ground effect the test results of the wig craft in ground effect with the flow velocity of 40 ms are shown in figures 3b and 4. Ground effect craft technology wigs wing in ground are advanced hybrid air cushion crafts and they offer the combination of speed, fuel efficiency.

So its really an airplane that takes advantage of ground effect, rather than a diedinthewool ekranoplan. Toulouse, france june 2001 graham k taylor mba independent consultant commercial and business management hypercraft associates 23 wyndham avenue high wycombe bucks hp 5er england tel. Numerical study of the aerodynamics of a naca 4412 airfoil in. Edge vortices of a doubleelement wing in ground effect. A wingin groundeffect craft 11 having a loaded canard forewing and a main forward delta configuration wing 15 attached to fore 17 and mid 19 sections of a body 21 respectively.

Drawing upon years of practical experience and using numerous examples and illustrative applications, liang yun, alan bliault and johnny doo discuss. Experimental investigation of the ground effect of wig. Wig rides above the surface like an airplane on a dynamic air cushion that is produced by the vessels forward motion. A team of russian developers has been working on the creation of a multipurpose seagoing ekranoplan, the russian name for a wingin ground effect craft, or wig which they say could contribute significantly to the speed of seaborne traffic and search and rescue response times. Pdf wig craft serves niche transportation needs researchgate. The body 21 is formed with an integral planing hull 23 for amphibious applications, extending rearward to a tail section 25 which incorporates a ducted fan 27, and a vertical. Numerical study on the section design of a wing in surface effect. Wig crafts wing in ground effect crafts are the crafts.