Talk:Vortex ring

message: will try to create a simple diagram soon. this is a pretty hard physical construction to describe verbally. mnemonic 22:52, 2004 Jul 15 (UTC)
:woot, finally did the diagram. not sure if i rendered from the best angle...✈ James C. 20:56, 2004 Aug 16 (UTC)
Added a link which includes some graphs showing where a helicopter will enter vortex ring state. I didn't check copyright status, but maybe someone else can see if maybe they ca plot similar graphs or so from scratch at least? Kim Bruning 12:19, 25 Jun 2005 (UTC)
thread_title: Diagrams

message: Hi Guys,
I've tried to add a more general intro to vortex rings and have put the helo-effect as a subheading. I also tried to intuitively explain how the ring may form, but I need some one in the know to check it.
thanksKghose 15:02, 20 October 2005 (UTC)
thread_title:  More general introduction to vortex rings etc. 

message: Hi,
While looking into flight test data on an early VTOL aircraft Short SC.1, I came across a research memorandum which refers to the losses in vertical thrust due to what is referred to there as "ground effect". This seemed fine, since this is how I would have described it, so I added the appropriate link to the article. Looking at ground effect however, I discovered that this refers to a net gain in lift experienced by some conventional aircraft wing types when flying close to the ground. 
There is a potential confusion here, which I would like to sort out. Is "vortex ring" specific to rotary wing aircraft? Is "vortex ring" perhaps the U.S. term, "ground effect" the British term for the same thing?
Here is the reference: Discussion of ground effect w.r.t. the Short SC.1
Thanks TraceyR 19:55, 12 January 2007 (UTC)
thread_title: Vortex ring / Ground effect in fixed-wing VTOL aircraft

message: I think that the page Vortex ring toys provides redundant information, and a new section in Vortex ring would better suit the proper formatting of wikipedia. Thusly, I have added merger templates to the start of both pages. What do y'all think? Mmoople (talk) 22:32, 21 March 2009 (UTC)
replies: text: I'm not sure of the value of the Vortex ring toys article. It doesn't describe what such a toy is or does; the summary doesn't summarise the article's content; it's all opinion without sources. Really it's a candidate either for deletion or rewrite, rather than merger. A section in Vortex ring would be unjustified. Only after a total rewrite would a one-line mention that such toys exist (with a wikilink) be justified. --TraceyR (talk) 11:30, 25 March 2009 (UTC)
replies: text: I removed some OR and added a reference to Vortex ring toys. I also favour to leave it where it is, and add a "see also" here. I removed the merge tags. -- Crowsnest (talk) 11:42, 11 April 2009 (UTC)
thread_title:  Merger proposal 

message: I cannot find any reference to Shafranov regarding the similarity of steady Euler flow to the MHD equations, but I did find a reference in a footnote in Saffman (Vortex Dynamics) to a 1986 paper, H.K. Moffatt, "On the existence of localized rotational disturbances which propagate without change of structure in an inviscid fluid", J. Fluid Mech. 173, 289-302. Since Hill's spherical vortex is a very specific vortex ring, and its relation to MHD tenuous (without a reference), it seems like this is a trivial inclusion, and should probably be axed. Markstock (talk) 00:59, 18 October 2010 (UTC)
thread_title:  Keep Shafranov reference? 

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thread_title:  External links modified 

message: Hello fellow Wikipedians,
I have just modified one external link on Vortex ring. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
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thread_title:  External links modified (January 2018)