Keep in mind that you can't eliminate induced drag...you will always have wingtip vortices. I can't write the formula on my tablet. (cl squared / pi e AR). Most wingtip devices simply improve the efficiency by increasing the effective span or increasing the elliptical ratio since that's about all you can change with wingtips. I read an interesting masters thesis that was studying wingtip sails...he was trying to use wingtip vortices to create thrust instead of reducing induced drag...it looked like feathers on the wingtips of an soaring bird...extremely high drag at low speeds but interesting. On Jan 19, 2014 11:21 PM, "Global Solutions" <smcdonal at kos.net> wrote:
> I was looking at YouTube today and accidentally ran across this > http://www.youtube.com/watch?v=RoOh-fgI8oU > http://www.youtube.com/watch?v=ULhZchv7ito > > Might be of some interest to the list. > Has anyone tried changing the wing tips? > Regards > Stan > > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
