Flying in the best air allows for a greater sample (time and distance) of air to pick the best climb.
Sent from my iPhone On 18/03/2013, at 10:21, Matthew Gage <m...@knightschallenge.com> wrote: > Comparing some flights from a recent comp, > > A glider that flew direct saw 4 knot average climbs and averaged 40:1 > > A glider of the same type deviated a lot, saw 6 knot climbs and achieved 50:1 > > The glider that deviated could fly an additional 26km and still be ahead. > That's a deviation of about 42 degrees ! > > Alternatively a 30 degree deviation has this glider 6 minutes ahead after > 100km ! > > > Matt > > > On 17/03/2013, at 21:52 , John Orton <johno...@gmail.com> wrote: > >> John H Cochrane has some very good articles on the web he has done some >> analysis on deviations which can be found at >> http://faculty.chicagobooth.edu/john.cochrane/soaring/docs/deviations_I.pdf >> >> Othe good artciles can also be found on this page >> http://faculty.chicagobooth.edu/john.cochrane/soaring/index.htm >> >> Regards, >> John Orton >> >> >> >> On 17 March 2013 11:57, Bruce <discusdri...@gmail.com> wrote: >> Adam, >> >> Is the wisp stable, building or decaying? No-one has identified that so far. >> Building, go. Decaying, pass it by. You should know unless you have been at >> cloud base - watch the sky ahead, not just cloud by cloud. >> >> I broadly agree with some previous comments, but also no-one has mentioned >> whether it is upwind or downwind (assuming that the direct track has a >> crosswind component). A mistake (no better air) made after diverting >> downwind is a bigger mistake. >> >> Also no-one has mentioned whether there are other gliders already at the >> wisp or headed that way - if there are, and they are clearly climbing, then >> go for it. On some days the cycle may be short, so wisps are used often. >> Then again, you can be surprised and use a wisp on a bigger day. >> >> You have asked a closed question (assuming that if it is more than 30degrees >> it isn't worth diverting). Some of the previous points may justify greater >> diversions if very short distances are involved, if upwind/other gliders >> climbing strongly etc. >> >> There is no one simple rule of thumb - there are quite a few, and they have >> greater or lesser importance on different days. That's why those who fly >> more generally succeed! (So long as they aren't just repeating themselves). >> >> Cheers >> >> Bruce >> >> Sent from my iPad >> >> On 15/03/2013, at 5:42 PM, Adam Woolley <go_soar...@hotmail.com> wrote: >> >> > Everyone knows something that another doesn't know in soaring. Trying to >> > figure out the below, any thoughts from the floor? >> > >> > >> > >> > The scenario: You've just left a CU, with the cloud direct on track being >> > your target cloud between 3-5km away with an average climb expected, >> > direct is blue and normal sink. 30* to your left/right is a whisp, not one >> > that you'd use to climb in - but one that you could deviate too in order >> > to get reduced sink or a hundred feet of altitude. >> > >> > Do you, go direct through the sinking air, or cover extra track miles to >> > the whisp that you know you're not going to climb in, but get remarkably >> > reduced sink (or even a small gain in height)? >> > >> > For me, I either always just lose out (more often than not) when getting >> > to the next CU, or gain a massive advantage with a 1000' height gain on a >> > competitor in that short cruise. >> > >> > Have you got any rough 'rules of thumb' that you use in order to decide if >> > the short term deviation is worth it or not? >> > >> > ie, how can I get to the next CU by beating the other competitors by >> > second a mile (as G.Moffat would say) if it's possible overall. >> > >> > >> > Cheers, >> > Woolley >> > _______________________________________________ >> > Aus-soaring mailing list >> > Aus-soaring@lists.internode.on.net >> > To check or change subscription details, visit: >> > http://lists.internode.on.net/mailman/listinfo/aus-soaring >> >> _______________________________________________ >> Aus-soaring mailing list >> Aus-soaring@lists.internode.on.net >> To check or change subscription details, visit: >> http://lists.internode.on.net/mailman/listinfo/aus-soaring >> >> _______________________________________________ >> Aus-soaring mailing list >> Aus-soaring@lists.internode.on.net >> To check or change subscription details, visit: >> http://lists.internode.on.net/mailman/listinfo/aus-soaring > > _______________________________________________ > Aus-soaring mailing list > Aus-soaring@lists.internode.on.net > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring
_______________________________________________ Aus-soaring mailing list Aus-soaring@lists.internode.on.net To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
