http://glidemet.co.uk/glidetalk/ Glidetalk Topic: Helm bar en Sat, 31 Jul 2010 22:51:57 +0000 http://glidemet.co.uk/glidetalk/topic/7#post-37 Mon, 26 May 2008 05:18:33 +0000 Peter Whitehead 37@http://glidemet.co.uk/glidetalk/ <p>Penrith Week (10th to 18th May) at Edensoaring's Skelling Farm site saw consistent light to moderate easterlies with inversions between 3000ft and 5000ft. Taake a look at Sandy Hawkyard's pictures (www.sandyprints&gt;co.uk), you can see the most beautiful wave cloud which greeted us one morning. When the sun got going the situation changed and the flow became broken with tight rough thermals just upwind of the site and just downstream of the Cross fell slopes where the flow seemed quite smooth. The best model to describe this is the "hydraulic jump" effect where flow breaks down to create a thicker turbulent flow. Chris Riddell at Sutton Bank described this as occurring at Cross Fell , though at the time in my ignorance at the time I disputed it (sorry, Chris!). See "hydraulic jump induced waves" in Google, there is plenty written about it. David Mccarthy and Ian Ashton during Penrith Week both describe climbing to 9500ft upwind of the crest of the crest of the escarpment. The literature does mention that the hydraulic jump, effectively representing an obstructing "wall" can create a wave effect upstream, and perhaps this is what was happening.<br /> Lots more to discover at Skelling. </p> http://glidemet.co.uk/glidetalk/topic/7#post-25 Fri, 02 May 2008 22:38:37 +0000 peterfyg 25@http://glidemet.co.uk/glidetalk/ <p>strong enough to overide the thermal influence, impressive </p> http://glidemet.co.uk/glidetalk/topic/7#post-23 Fri, 02 May 2008 13:16:46 +0000 Glidemet 23@http://glidemet.co.uk/glidetalk/ <p>BTW the Helm Bar shows up very nicely on satellite -- here it is (via MODIS) from 17 April. </p> http://glidemet.co.uk/glidetalk/topic/7#post-20 Fri, 02 May 2008 12:34:14 +0000 Glidemet 20@http://glidemet.co.uk/glidetalk/ <p>OK, you can now upload pictures. They won't display automatically but users will be able to click and open them. </p> http://glidemet.co.uk/glidetalk/topic/7#post-19 Fri, 02 May 2008 12:11:11 +0000 Glidemet 19@http://glidemet.co.uk/glidetalk/ <p>Got to be honest -- I haven't set up uploading images (yet). </p> http://glidemet.co.uk/glidetalk/topic/7#post-18 Fri, 02 May 2008 08:01:58 +0000 johnmcwilliam 18@http://glidemet.co.uk/glidetalk/ <p>We drove north on the M6 past Penrith on Friday 18th April and saw a superb wave gap open over Skelling Farm.<br /> I took a pic of it but don't know how to up-load it, any tips on that? John </p> http://glidemet.co.uk/glidetalk/topic/7#post-15 Mon, 28 Apr 2008 21:37:53 +0000 bruce cooper 15@http://glidemet.co.uk/glidetalk/ <p>Here is what we missed at our Latrigg expedition ...the rotor was directly over the launch site from the Friday to Monday and we could only launch late in the day. The Helm bar would have been easily and safely reached from our home site of Skelling farm (nr Penrith jctn 39 on the M6)<br /> <a href="http://s214580749.websitehome.co.uk/soaring/soaring.html" rel="nofollow">http://s214580749.websitehome.co.uk/soaring/soaring.html</a><br /> or<br /> <a href="http://video.google.co.uk/videoplay?docid=-7917084477409238823&#38;hl=en-GB" rel="nofollow">http://video.google.co.uk/videoplay?docid=-7917084477409238823&#38;hl=en-GB</a></p> <p>I wonder if the sat pics show it as well ?<br /> The site for an early world altitude record from 1939 was only 2 nm SE from Skelling farm.<br /> Edensoaring opens up from the 10th May, so if you see more east wind get in touch and if there are enough people we could launch in to the "Helm" (the first 9 days are quite busy with 25 gliders booked in). The site could be useful for the occasions when east winds spoil the soaring on the east coast. BGA turning point list 11a came out last week with lots of new and useful points in the Lakes and borders, thanks Ian and Tim.<br /> <a href="http://www.edensoaring.co.uk/" rel="nofollow">http://www.edensoaring.co.uk/</a><br /> new members welcome<br /> Bruce </p>