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Text and/or other creative content from this version of Hovercar was copied or moved into Hovercraft with this edit on 2022-05-03 19:10:00. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
From the article: "... is a craft capable of travelling over land, water, mud or ice and other surfaces both at speed and when stationary"
how can any craft travel when stationary? Those last three words doesn't seem to add any value to the sentence. — Preceding unsigned comment added by Superwesman (talk • contribs) 20:43, 5 April 2013 (UTC)
Good example of the usual US 'world' view (like "'World' Series")... a British invention: no mention in introduction; first national mention is of a US inventor of a modification to one aspect of design.
All ready for a Hollywood film, like the one in which the US did the work on the WWII Enigma machine. Priceless entertainment! Unfortunately, alo one of the main US sources of education. (Aside: something like 75% of us citizens have never been outside their own country).
BTW, today (11th June 2009) is the 50th anniversary of the first hovercraft flight —Preceding unsigned comment added by 86.133.166.160 (talk) 06:33, 11 June 2009 (UTC)
So your (or somebody's) response to this is to remove all mention of US Hovercraft development? Full of eels, indeed!
Jperrylsu (talk) 00:33, 8 September 2009 (UTC)
It's not clear to me what the difference between a 'flarecraft' and a 'air cushion vehicle' is. Is a flarecraft one that can go over 95mph?
"This service ceased in 2002 when the Channel tunnel took over the fast transit of cross-channel traffic."
The hovercraft was not retired through obsolescence: it was withdrawn thans to the collapse in cross-channel day trips resulting from changes in the "Duty Free" laws which hitherto facilitated the sale of cheap alcohol, cigarettes and perfume to the British at the French Channel ports. — Preceding unsigned comment added by WiseOldBob (talk • contribs) 10:13, 26 August 2009 (UTC) ---
As one of the original editors of this page, now returned to see it all in mass confusion...
The chief problem here is that no differentiation is being made between "surface effect vehicle" (the set), and "hovercraft" (the sub-set). Clear that up and all the arguing would disappear. It seems clear that there was literally decades of messing around with various "hovercraft-like" surface effect vehicles in several countries before the first "hovercraft" per se. was "invented."
Sir Christopher was indeed the first person to invent a working hovercraft with all the bits that we would look for to identify any standard hovercraft today. This is derided by some as being "He came to the market first" (but others "invented" it previously). This would only be the case if separate individuals all invented the same thing at more or less the same time, but they did not.
Charles Fletcher did not create a working hovercraft as far as I have been able to find out. Even if he did, the annular ring of air and the skirt are the most identifying features of any hovercraft and as far as I am aware, he did not have those.
The article should be restructured to reflect the difference between years of research in many quarters on surface effect vehicles, and to differentiate Sir Christopher as the single inventor of the "Hovercraft" (the one with the skirt and the downward facing blower etc. that we all know).
Certainly, as others have pointed out here, if the Wright Brothers get credit for inventing the airplane, then Sir Christopher should get the hovercraft. Nothing the Wright brothers did was original to them, they merely pieced together ideas gained from a tour of the airplane clubs of europe the summer previously.
In Sir Christopher's case, his design used an annular ring of air assisted by a rubber skirt. That was his input as far as I am aware, and the exact detail that differentiates a hovercraft from other failed attempts. Anyone who can prove that those two things were included by others on their attempts, might have a case for prior invention but otherwise the win must go to Britain on this one.
— Preceding unsigned comment added by 154.20.183.97 (talk) 23:23, 17 October 2007 (UTC)
I'm preparing to add some information regarding Charles Fletcher, the American inventor of the hovercraft who designed a vehicle classified by the DoD during WWII in the U.S. well before his British counterpart who continues to get all the credit is said to have invented (or "re-invented") it. I also intend to mention the patent lawsuit against the Americans that uncovered Fletcher's original invention. Any discussion regarding the addition of this point? —ExplorerCDT 23:38, 2 May 2005 (UTC)
This article is simply a POV. It does not fit well the the factual basis of the Hovercraft section and stands out as sore POV by Fletchers friends. Get over it. The Hovercraft became commercially viable because of the work Sir Christopher did. Using his principle the British built the first commercial Hovercraft.
If Mr Fletcher was the first source of the hovercraft and did such a great job then why did Bell buy SR.N5's from the BHC in the UK for US Military use in Vietnam? If he had a viable design then why didn't he supply the US military with the craft they were looking for? Not only did Bell buy the SR.N5's from BHC they also bought the rights to produce them and made a modified version called the SK5. This is because the UK was the first source of a commercially viable hovercraft and that was a product of the work done by Sir Christopher no one else. The UK joint forces test center in Lee-on-the-Solent UK was testing the SR.N2, SR.N3 and SR.N5 long before the US had anything to show (the LCAC came and lot later). Hence this is why Bell bought the SR.N5 as the first viable, working hovercraft built by BHC and a product of the invention and development of the Hovercraft in the UK by Sir Christopher.
As I suspected you are a biased 'not invented here' Fletcher fan. That explains why this section on Hovercraft is so inaccurate. Thanks for letting me and everyone else know. By the way plural of Hovercraft is Hovercraft...no 's'. That was an after the fact re-invention of Sir Chritophers word in American dictionaries. The word is British and OED is the correct source of the word in its correct for for both one and many craft.
In fact so minor no one's ever heard of the poor chap. I have researched the history of this subject and also met Sir Christopher and many of his associates. I would be a little more accepting he made any conrtibution but there are no craft on show anywhere that he designed or made. The Hovercraft I have found in a US Museum: One in storage at the Smithsonian (a Dr. Bertelsen design), One SK5 at the Army transport museum in Virginia. In service in the US there are a few Griffons (UK craft), Slingsby (UK craft) Hoverworks craft under construction (UK designed craft). The Canadian coast guard used SR.N5's and are in the process of switching to Griffons. But there is not a single sight of one 'Fletcher'design. Where can everyone go to see one? With you extensive knowledege of law you must know where the evidence is?
In 1993 the LACV-30 Hovercraft program was closed out and moth-balled on the James River near Fort Eustis. Some were sent to Alaska to work on the Tundra. I understand those have since been destroyed. I worked on them during the Mid Eighties. These craft were built by Bell Textron and became the Army's biggest embarrasment. The most expensive beer can ever bought. The main downfall of these craft were that Bell designed them with aluminum fuel lines with Stainless fittings. The galvanic corrosion that took place soon rotted the entire fuel system and with one craft torn down We started working on a new fuel system. I designed an aviation style fuel sytem with flex hose and solved the corrosion problem. We were given the go ahead to rebuild the first one to prove our point. After the rebuild, the contract was given to Bell Textron to complete the rebuild on the remaining 23 craft. The bid was too much and the Army gave in to scrubbing the program. Just a bit of trivia to those that seem to know so much about hovercraft. --Diver7 23:35, 17 September 2007 (UTC)
Hey, I'm thinking about writting an article about personal hovercrafts. There are kit-built ones used for leisure, there are race hovercrafts.. and hovercraft races... there are companies which sell personal hovercrafts which are in size bit more than an average boat... I think many ppl would be interested to know that for a reasonable price they can have a hovercraft for themselves :) What do you think? Should it be a separate article or part of this one? --Robert 11:44, 26 September 2005 (UTC)
Go ahead and write the article! The two big sources of plans for homebuilt hovercraft in the US are Universal Hovercraft and Sevtec. Both have models that range from single-person to 25' craft. UH craft are typically faster and a little less comfortable, while the Sevtec crafts are built for cockpit space but wouldn't win too many races. I'm building a 16' Sevtec so I am a little biased, but I feel its more of a utilitarian craft. A 20' Sevtec craft with an 80hp engine made a voyage on open water from Puget Sound to Juneau, AK.
UH website: http://www.hovercraft.com ST website: http://members.aol.com/sevtec/sev/skmr.html
64.223.42.127 04:01, 27 November 2005 (UTC)DHyslop
I don't understand the first sentence.
I understand now.
So whats going on? —Preceding unsigned comment added by 150.176.174.200 (talk) 14:11, 29 March 2011 (UTC)
It appears that a partiotic American has tweaked the article to suggest that someone called Beardsley invented the hovercraft, and that Cockerell only added the finishing touches to Beardsley's research.
Sorry, this is not true. Beardsley's patent number 3195665 is dated July 1965, but a fully functioning hovercraft was in use in Britain in 1959.
If you want to claim that an American invented the hovercraft and Cockerall only did the finishing touches to bring the thing to fruition, then under that criterion you could equally well say that the British invented powered-manned-flight and not the Wright brothers, who only did minor tinkering to finish it.
I posted some info and a link about cushion boats which were built by Vladimir Levkov in the USSR. Sea diver 10:59, 4 September 2006 (UTC)
I recently discovered that the Bora Hovercraft was substantially heavier than the Zubr (1050 tons vs. ~550 tons + 150 tons cargo), so I corrected the article accordingly. Just for those who are wondering why the image captions changed... --Oceanhahn 18:24, 30 June 2006 (UTC)
The Bora is a side wall Hovercraft and as such, some of the side structure is in the water. This should be made clear in the article as a true Hovercraft has all hard structure clear of the water when on cushion.
It would be nice to have a picture of the first hovercraft. I remember seeing archive film of this, so I'm sure photos exist somewhere.
As far as I recall it was disc shaped with a central funnel-like fan and a cabin in front of the fan.
I do not know how to add photos myself.
To the anonymous editor who last edited from 71.42.59.58:
You should read the page WP:REF, which discuss how to cite sources in a Wikipedia article. The "References" section of the article is to reference sources used in the creation of material in the article. It's not "Further reading", or "Related material" - that's why there's a big list of external links. If you used those books to contribute material to the article, then by all means include them as references (pointing out which material is sourced from them would be helpful in this case). But without that, sticking them at the top of the list just looks like advertising. Orpheus 02:52, 28 October 2006 (UTC)
I believe, that until air cushion vehicle redirects here, we should not consider developments prior to 1956 "unimportant". Hence, I splitted "history" section into two subsections: "early air cushion developments" and "air cushion on hovercraft principle".Cmapm 20:38, 17 July 2007 (UTC)
I just watched an early 1970's episode of Let's Make a Deal on GSN. One of the prizes was an Air Cycle 720 made by Air Cushion Vehicles of Troy, New York valued at $1,495. It could go up to 40 MPH. What happened to this company? Looks like a fun vehicle!
Kfinto 02:52, 28 July 2007 (UTC)
Image:Hovercraft 1.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.
Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.
If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images uploaded after 4 May, 2006, and lacking such an explanation will be deleted one week after they have been uploaded, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.
BetacommandBot 00:48, 7 November 2007 (UTC)
Image:Hovercraft 2.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.
Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.
If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images uploaded after 4 May, 2006, and lacking such an explanation will be deleted one week after they have been uploaded, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.
BetacommandBot 00:49, 7 November 2007 (UTC)
Working with Cockerill, Bliss invented the segmented skirt which was the vital evolution from early versions of the hovercraft. It would be useful if anyone could find out more about this. Also Bliss went on to develop the test track at Cambridge, again more information would be really helpful as this was a fascinating and controversial major experiment. Excalibur (talk) 11:06, 26 November 2007 (UTC)
I wonder if anyone knows where the following comes from: "The skirt was an independent invention made by a Royal Navy officer, Latimer-Needham, who sold his idea to Westland (parent company of Saunders-Roe), and who worked with Sir Christopher to develop the idea further." That may be true at least in part - this was a complex project and lots of engineers contributed. Nevertheless it would be useful to allocate due credit for each invention - the list of patents is formidable: according to: - and I'm relying on the google cache as the main site appears to be offline: Sir Christopher Sydney Cockerell C.B.E., R.D.I., F.R.S. 4th June 1910 - 1st June 1999 Hovercraft patents (Some titles have been shortened.)
Dec. 1955 854211 Basic air curtain case.
May 1957 893715 Air cushion platform.
May 1957 894644 Landing air cushion for aircraft.
May 1957 895341 Air cushioned aircraft carriers.
Jun. 1958 944501 Side wall vehicle-curtain end seal.
Sept. 1958 935823 Injectors applied to vortices.
Sept. 1958 935824 Pressure induced outboard recovery.
Apr. 1959 919350 Inboard recovery of curtain air.
May 1963 935824 Outboard recovery-to form a second curtain.
May 1963 935826 Outboard recovery-to form a second curtain.
Sept. 1958 935825 Flexible skirt/curtain cushion seal.
Apr. 1959 924496 (With R. Stanton Jones) Recirculation using injectors.
Mar. 1959 944502 Stability and trim control by compartmentation.
Oct. 1959 965748 Variable incidence surfaces for aerofoils.
Aug. 1963 944503 Stability cushions distributed around primary cushion.
Aug. 1963 944504 C.P. Shift.
Jun. 1959 959025 Steering and propulsion.
Mar. 1959 946917 Stabilization of airflow and prevention of negative lift.
Oct. 1959 959825 Cushion (heave) control for travelling over waves.
Oct. 1959 966135 Recirculation by Coanda effect.
Jan. 1960 968194 Vortices generated by rotating pads.
Mar. 1960 968381 Side-wall vehicle with paddle wheel/air pump.
Apr. 1960 973072 Propulsion by blowing into a cushion.
Apr. 1961 975558 (With D. Hardy) Recirculation-tapering duct arrangement.
Apr. 1960 977060 Recirculation-induced recovery system.
Apr. 1960 975241 Reinforcement of rear curtain by ram air.
May 1960 972068 Hovercraft with inflated side parts.
Apr. 1960 975242 Flexible rod skirt.
Apr. 1960 977061 Positive displacement pump at periphery.
May 1961 983446 Recovery of front curtain air to form a rear cushion.
Aug. 1960 995127 Rail car.
May 1961 997943 Protective air cushion for aerial body.
Jun. 1960 983142 Air bearing.
Oct. 1960 989222 Air pump-fluid brakes.
Jun. 1961 989534 Water separation from recovered air.
Jan. 1962 990745 Inflatable load lifting devices.
Jun. 1961 1002572 Sponge support members.
Jan. 1962 1000771 Controlling flow of fluid by a fluid curtain.
Oct. 1961 1029960 Travelling waves on sidewalls for propulsion.
Dec. 1962 1056070 (With L.A. Hopkins) Flexible wall, inflated parallelograms.
Nov. 1962 1064221 Flexible skirt with coandering fluid curtain.
Dec. 1965 1064222 Inflated skirt, perforated wall, forming skirt deflecting cushion.
Jun. 1963 1073731 Controlled vertical movement of wall to correct roll and pitch.
Jun. 1963 1087734 Flexible wall actuated by fluid flow.
Oct. 1966 1072732 Inflated bag/segment wall.
Nov.1963 1103191 Guiding means for docking (vertical).
Apr. 1964 1095756 Propulsion by surface effect W (free belts).
Apr. 1964 1110212 Propulsion by surface effect 'B' (discs).
Apr. 1964 1095775 Propulsion, radial members (flails).
Jan. 1965 1092816 Propulsion by modified paddle.
May 1964 1075662 Spray prevention.
Apr. 1965 1135768 (With Messrs Grace & Boutland). 'Boiling water' cushion.
Apr. 1965 1138532 Air-feed flexible duct within cushion space.
July 1967 1236571 Trim control-tapered roller.
Feb. 1967 1216475 Hovertrain-ram air deflectors.
Jul. 1967 1239745 (With D.S. Bliss). Anti-ditch shift of cushion C.P.
Feb. 1967 1219285 A.C.V with wave-top slicer.
May 1967 1228588 Hovertrain-{;one or belt current pick-up.
Oct.1981 1584154 Cushion seal for A.C.V.
The real innovation in hovercraft development occurred in 1957, and was revealed to the public in 1960. It was the invention of the "Double-Walled Flexible Skirt" by Mr. Norman B. McCreary in Little Rock, Arkansas,USA (Patent No. 3,532,179) and was published in the Arkansas Gazette Newspaper on Jan. 25, 1960 and in Science and Mechanics Magazine in June, 1960. This was the Conception and Technological Development that enabled hovercraft to travel over uneven terrain or waves of the sea. It later became known as the "Bag Skirt" as it inflated around the edge of the hovercraft. It would raise and lower the hovercraft off the ground by inflation and deflation of the Double-Walled Flexible Skirt. Later fingers were added to the bottom of the skirt to compensate for wear and reduce drag. After this concept was made public in 1960, all hovercraft utalized a "Double-Walled Flexible Skirt" system for practical hovercraft operations, (see time line Naval Engineering Journal, Febuary 1985, page 261). 6262 —Preceding unsigned comment added by Jwmccreary (talk • contribs) 06:08, 23 January 2008 (UTC)
Under certain conditions, the inner wall 508 may be provided with openings 550 which are shown in FIG. 27A. These openings are sufficiently small, so they maintain a slightly greater pressure in the space 500 than in space 502. The difference in pressures may be regulated by the size of the openings 550. They are chosen, so that they produce a slight restriction of flow to insure the slightly higher pressure in 500 than in 502. However, under other conditions, these opening 550 may be omitted.
now sold by Hovair Systems. McCreary beat GM in interference court and the French dropped out because they knew they were not first. McCreary invented THE FIRST inflatable skirt of ANY KIND. Shape is covered in the patent. So is pressure. So is air flow. "Best mode",as seen by the inventer, does not LIMIT the inventer's first design, once the concept of inflatible skirts is disclosed. Shape, height, pressure, thickness, all come under "other factors as desired". Hovair Systems was a spin-off of GM under license, from McCreary's US Patent No. 3,532,179. Therefore bag skiers are a McCreary invention.Razorback 1 (talk) 04:13, 30 April 2009 (UTC)
The text in page claims that the patent covers the "Double Walled Flexible Skirt" yet the word 'skirt' is not used anywhere in the patent. THe development of skirt systems was indeed a significant step in hovercraft development but as noted in the section "History" below and "Denys Bliss and Latimer-Needham" above many people conceived flexible seals and skirts. I can't find any evidence to suggest that McCrearys patent had any major influence. Latimer-Needham's patent was granted in 1959 (see 1965 Flight magazine []) and is generally considered the key patent for workable skirt systems. I don't believe Latimer-Needham had much involvement with Saunders Roe et al. after he sold his patent rights to them. However McCrearys patent is not insignificant and has been recognised in body of work of the development of hovercraft. [].
McCreary's patent does include a 'inflatable' skirt but I doubt that that was the intent. Almost any of the earlier propsotions for flexible seals wouls inflate. The function of the internal 'wall' is to effectively prevent the lower edge of the outer wall from snagging on objects and creationg the seal rather than to contribute to the shape of the skirt. (P20 Col 8 Line 31 " The slant of the inner wall 68 permits the stone 72 or high object to pass outwardly from the curtain 54 as well as inwardly, as the craft passes over the stone.") and to cause the skit to stand up. In a bag skirt the inner wall retains the loop of outer wall. The patent notes that the system can be used without the inner wall (thus becoming a jupe type skirt). A true bag skirt can't exist without an inner wall.
The 'best mode' assertions is just opinion of vague statements. Given the large number of illustrations in the patent no real features are depicted other than a Jupe type skirt in a multicell arrangement (jupe skirts have very poor pitch/roll stability and need to be used in multiple arrangements). If the system was indeed a bag skirt, I'd expect to see an example of a single cell machine. The skirt system developed a for the Hovair air bearing has a striking similarity to that as described by McCreary. However I can't find any evidence that McCready challenged anyone for using bag skirts that he 'invented'.
The section "Skirt Development" is largely original research. This and the similar material that appeared in the History could be added to a new page about other inventions and developments that had little influence on the development of modern hovercraft. Yimby (talk) 00:15, 5 June 2009 (UTC)
In the UK the RNLI (Royal National Lifeboat Institution) operates a hovercraft as its rescue vehicle on Morecambe Bay. Morecambe Bay lies between Lancashire and Cumbria, and reduces to vast areas of mudflats and quicksands at low tide - a hovercraft is therefore ideal for rescues that might include people stuck on sandbanks who might perish before the water became deep enough for a conventional lifeboat to reach them. NorthernSpinney (talk) 19:35, 29 February 2008 (UTC)
Would someone like to write an article on this manufacturer of hovercraft? These things are a bit outside my areas of knowledge and I don't feel I'd be able to write a high enough quality article. Mjroots (talk) 06:09, 6 April 2008 (UTC)
Quote: 137.4 km/h (85.87 mph), 34.06 secs measured kilometre
Can anyone verify this? It's clearly wrong since 34.06s/km = 104.696 km/h. 137.4 km/h = 26.201s, so not an obvious typo. Not only that, but 137.4 km/h (@1.609344 km/mile) = 85.376 mph. Also, no sources are cited. --PuzzleScot (talk) 12:02, 10 May 2008 (UTC)
This article opens with an anomolous understanding of what is patentable. Thus Although he filed a number of patents involving air-lubricated hulls in 1957, no practical applications were found is wrong.
You cannot patent a principle or a bright idea, only the application of a principle or idea is covered by a patent. Sir Christopher Cockerell's original patent spelt out precisely how he had applied principles he had discovered in order to built the first Hovercraft. He would have had to disclose all details of each practical application in order to get the provisional patent he sought. In fact this first application disclosed the use of a 'skirt' and includes a sketch so there can be no doubt that flexible skirts were part of Cockerell's Hovercraft concept. I mention this because many seem to think that this idea came later. In fact there were no Hovercraft before Dec 1955 as Christopher Cockerell and his wife Margaret coined the word while living at their boatyard in Somerleyton in Suffolk.
In paragraph 7 it says 'However, Colonel Melville W. Beardsley (1913-1998), an American inventor and aeronautical engineer, received $80,000 from Cockerell for his rights to American patents.' What evidence is there for this statement, is there a date? I can find no evidence that Sir Christopher Cockerell ever bought patents from Col Beardsley, he was personally barred from doing anything of the kind following his agreement with NRDC/HDL. I have to conclude it did not happen, it seems very wrong to make such an assertion without a date and a reference. Can anyone help please?
I have now read the whole Hovercraft entry, there are many errors throughout and I feel it should be removed pending substantive review.
highlight (talk) 09:11, 2 August 2008 (UTC) unsigned comment added by Mariner77 (talk • contribs) 13:06, 17 July 2008 (UTC)
highlight (talk) 06:08, 16 July 2008 (UTC)
This article depicts Hovercraft as THE air cushioned craft altogether. There is a history like the first functioning Austrian air cushion craft (developped by Dagobert Müller von Thomamühl during WWI in the Adriatic Sea) or the Sovyiet developments L1 to L5 (designed by W. I. Lewkow) which were deployed in WW II.
On the other hand maybe this wikipedia should have a general article on air cushioned crafts and then continue with "Hovercraft" as the present main branch. --Kipala (talk) 20:06, 10 June 2009 (UTC)
I agree with the idea of a general history article that covers other Surface effect vehicle development. That article can include all the interesting development work that occured everywhere. That would allow this article to focus on the post 1950's developments which most casual readers would be more interested in.
There is also a case for having a diambig or classifiying article to make sure everyone is on the same page eg.
I also suggest that Hovercraft are those vehicles that developed as a result of Cockerell and Sauders-Roe and that earlier developments are call ACVs. As we have seen in the previous versions of this article I think the two are different.Yimby (talk) 00:23, 11 June 2009 (UTC)
The history section contains extensive details and even extended quotations from the work of Russian scientists/engineers, but appears to dismiss or even belittle the work of non-Russians. In particular, dismissing Cockrell, most famous for his work on the hovercraft, with the single sentence "However, today, in western culture, hovercraft is often considered as the brainchild of Sir Christopher Cockerell" shows clear bias, and is unacceptable. —Preceding unsigned comment added by 129.97.184.185 (talk) 17:53, 22 July 2009 (UTC)
Same problem as before - ACV history mixed into Hovercraft history. The previous history section of this article got removed because it reduced to a battle of american interests claiming invention (of hovercraft) there rather than UK. Again I suggest a classification/definition article to get all these vehicles into their proper perspective then a general history of ACV's where everyone can add their two cents. 'Hovercraft' history can then be constrained to follow the work of Cockerell. Yimby (talk) 03:52, 23 July 2009 (UTC)
For what it's worth:
Frank Black's Los Angeles (Frank Black song)
http://www.youtube.com/watch?v=uDVgfnyHP0c
Any information (including pics) about Larus (reg. CH-AHL) hovercraft which was based in in Tuktoyaktuk, N.W.T., Canada in the late 1980`s?
This ACV was sold from Finland to Canada in mid 80´s.
What is the fate of this finnish-made ACV?
What happened to the company Arctic Hovertrans Ltd.?
http://www.esrfunds.org/documents/ESRF_095.pdf (see pgs. 78-79)
83.145.225.152 (talk) 13:30, 13 November 2009 (UTC)
This article claim Levkov's vehicles as GEV. It is not correct, because GEV principle has no lift engines and fans as main regime. Maybe as start device, not all the time. Levkov's vehicle use lift engines and fans. Ofcause, it is not usual sheme, it is something between GEV, hovercraft and tunnel-hull catamaran, but it is not GEV. And russian sources describe start of Levkov works as early as 1930, a couple years after publication of Tsiolkovsky book, which lay ground of his work, not finnish vehicle. AFAIK, this finnish vehicle was the first attempt to build true GEV, not hovercraft.Ходок (talk) 08:59, 27 July 2010 (UTC)
Can the Hov Pod be mentioned ? Also mention the cost: about 19500 €, see http://www.gizmag.com/go/3543/ , http://www.hovpod.com/hovpod/hovpod.html
What would also be handy is a propulsion comparison; ie between an airplane, hovercraft, airboat and a boat. My guess is that ie airboats are much more efficient (ie they skim the watersurface better). 91.182.175.107 (talk) 10:24, 29 November 2010 (UTC)
I beleive that Section 2.1 should be deleted. It is original research.
This section makes five broad statements:
1 That McCreary is credited with inventing the bag skirt.
2 That McCreary's invention was the technological breakthrough for hovercraft.
3 That McCreary's skirts were the progenitor of modern skirt systems.
4 That all hovercraft began using bag skirts after after 1960.
5 That UK skirt development followed on from Mcreary's invention.
The citiations supporting these statements are:
8.^ US Patent 3,532,179: Aerodynamic lifting device and method of lifting , Filed June 1, 1965, granted October 6, 1970
9.^ Wille, Wayne (June 1960). "Analyzing Air Car Designs". Science and Mechanics: pp. 73–77
I have searched the web for any other references to Mccreary and his design and have found nothing. Any references simply lead back to the wikipedia article.
This text was added in it's earliest form on 24 january 2008 by user Jwmccreary: http://en.wikipedia.org/w/index.php?title=Hovercraft&oldid=186377635#Modern_Hovercraft_Development
The text has been altered to tone down the extravagant claim The real innovation in hovercraft development occured in 1957... User Jwmccreary changed their name to Razorback1 when I first discussed these claims in january 2008. User Jwmccreary has deleted their account since then.
1 There is no mention of "double walled flexible skirt" in the patent or any other reference. No other source "credits" McCreary with the invention of any skirt. The 2nd reference Analyzing Air Car Designs reports that "Some researchers add skirts to the base." McCreary is mentioned but "...he is not giving away details on the exact performance of his car...since in many cases patent rights...are involved". Secondly, the skirt described in the patent is not a bag skirt. It is a jupe type and is described in several places in the patent as being single "walled".
2 There is no question that the deveopment of the hovercraft would have stagnated without the addition of a practical flexible skirt. This particular statement implies it was McCrearys skirt (the bag skirt) was the major development for hovercraft. Yet there have been no references in any literature about McCreary's work until this wikipedia article.
3 The bag finger skirt evolved from the skirt system developed on the SRN1 which was a simply a jetted trunk to extend the peripheral jet. The "bag" section evolved as a method of making the very non-complying trunk extension more flexilbe (See Elsley and Devereux for bag/finger skirt development timeline). So the evolution was one of adding a bag to the finger rather than fingers to a bag.
4. Given the limited resources available, the first photo I can find of a practical bag-like skirt is a photo of the first SRN5 in the Flight International archives on 27 August 1964 (http://www.flightglobal.com/pdfarchive/view/1964/1964%20-%203195.html) and a cutaway drawing of the CC-4 inthe same issue showing a bag/finger skirt. There are some photos in 1967 in the same archive of homebuilt craft using bag skirts, and others using loop/segment skirts. There is nothing to suggest that there was some major uptake of bag skirt technology after McCreary's publications in 1960.
5. Latimer-Needham, Blyss and Cockerell have patents on skirts prior to 1960. Since there was no sudden switch to bag skirts in British development in the early sixties, to imply that latimer-needham carried on the work done by McCreary is unjustifiable.
I suggest as I did in June 20098 that this is all original research, added by a relation of McCreary to claim an unjustified place in history. McCreary filed a patent - it was essentially for a multicell jupe skirt machine. There are no records of a working machine. His work and patent seems to have had next to no influence on subsequent hovercraft development. If his work merits some mention then it would be better in corporated into the history section.
I have marked the section as OR. It should be deleted or substatially altered. Yimby (talk) 02:16, 19 May 2011 (UTC)
While I don't have any real position on the issue, it does seem somewhat inconsistent that the current introductory paragraph of this article specifically states that hovercraft are not considered aircraft, yet the article still features an aircraft series box. Can someone with more knowledge on the topic please resolve this inconsistency? DoC352 (talk) 02:59, 30 August 2011 (UTC)
Re: Post-War Progress
Please note that the KM Ekranoplan (aka Caspian Sea Monster) and the Lun class Ekranoplan are different designs. Two obvious differences are the 'V' shaped 'T-tail' of the KM (Lun's is flat) and the three dual missile launchers on the Lun (absent on KM).
As I am only a novice Wikipedian, I have changed the name in the link (Post-War Progress section) to match the linked page (Lun class). A more experienced editor might like to change the link AND the text to point to the KM page, as the KM is arguably more famous, being the first large Soviet WIG sighted by the west.
That said, the KM page does not currently have a picture and the interesting anecdote about missile launchers would no longer be relevant.
Up to you guys. — Preceding unsigned comment added by 202.83.95.69 (talk) 03:02, 31 January 2012 (UTC)
Not a classic Swedish name from the 18th century, S V George VEMPADAMTHARA, I suspect vandalism?
Alexmcfire (talk) 08:52, 25 February 2013 (UTC)
There was a chage to the intro from high pressure to "low pressure, high volume" in May 2013. This seems pretty impossible to me. This was by 64.184.102.150 . I'm going to change it back.76.218.104.120 (talk) 22:49, 21 August 2013 (UTC)
How could this article not mention the declared "father of the hovercraft", William R. Bertelsen?--Virtualerian (talk) 11:54, 16 October 2014 (UTC)
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Can somebody provide more detail or a link to another article that explains how a hovercraft hovers or how an air cushion works? For example, I suspect that if one pumps high-pressure air into an inverted, empty tin can that the can will not hover. Rather, it will tilt to one side to allow the air to escape, with part of its rim resting on the ground. Why doesn't a hovercraft do that? Does hovering depend on a large width-to-height ratio? Would a garbage can lid hover? Why? When a hovering mass starts to tilt, what feedback mechanism levels it again? IOLJeff (talk) 15:28, 13 March 2016 (UTC)
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One was in service between Takamatsu, Kagawa on Shikoku and Okayama on Honshu, until the Great Seto Bridge was built (see image). Another one is shown in this article as the ferry to Oita Airport. The one shown in this image display inscriptions on the rear, one in Japanese and one in latin script "Tobiuo" which is Japanese for Flying Fish. No indication of which company actually built it. There is an article on it in the Japanese language Wikipedia, but I can't read that, not even decipher. Can anybody help? --L.Willms (talk) 10:05, 30 May 2017 (UTC)
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from the article: "Over time, this design evolved into individual extensions over the bottom of the slots in the skirt, known as "fingers" Is there a source for this? 72.73.30.202 (talk) 17:25, 12 January 2024 (UTC)
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