Talk:Hunting oscillation: Difference between revisions

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The Japanese article on this subject appears to include additional information not covered here. Unfortunately, I can't speak a word of Japanese. Could some kind translator out there please have a go at translating the Japanese article. If you are a native Japanese speaker, with limited grasp of English, please have a go, I'm sure we can sort out the grammar and style issues once we have got a first iteration to work with. Gordon Vigurs 09:45, 27 August 2006 (UTC)[reply]

Swaying?

Sorry, always nit-picking, but to me swaying is what a drunk does rotating vertically pivoting on his feet (rolling and pitching?), whereas hunting is a horiontal oscillation around a vertical axis. I surmise that the image may originally have been one of a dog following a scent sniffing right and left. This is more like the motion of a railway vehicle described. In aircraft flight as I understand it, you have three basic oscillations to contend with pitching, rolling and yawing (the equivalent of hunting?).--John of Paris 10:02, 3 July 2007 (UTC)[reply]

The swaying motion refers to the qualitative manifestation of hunting in complete railway vehicles - a mix of lateral translational motion and yaw. The analysis here is restricted to wheelset hunting, which is about the only level amenable to analystical solution. The real situation is much more complex. If you can imagine the wheels sets and bogies at either end of the actual vehicle oscillating from side to side, not necessarily in synchronisation, you will get the picture. Gordon Vigurs 07:39, 9 July 2007 (UTC)[reply]

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 ==Swaying?==
 Sorry, always nit-picking, but to me swaying is what a drunk does rotating vertically pivoting on his feet (rolling and pitching?), whereas hunting is a horiontal oscillation around a vertical axis. I surmise that the image may originally have been one of a dog following a scent sniffing right and left. This is more like the motion of a railway vehicle described. In aircraft flight as I understand it, you have three basic oscillations to contend with pitching, rolling and yawing (the equivalent of hunting?).--[[User:John of Paris|John of Paris]] 10:02, 3 July 2007 (UTC)
+:The swaying motion refers to the qualitative manifestation of hunting in complete railway vehicles - a mix of lateral translational motion and yaw. The analysis here is restricted to wheelset hunting, which is about the only level amenable to analystical solution.  The real situation is much more complex.  If you can imagine the wheels sets and bogies at either end of the actual vehicle oscillating from side to side, not necessarily in synchronisation, you will get the picture. [[User:Gordon Vigurs|Gordon Vigurs]] 07:39, 9 July 2007 (UTC)