Bug HLG

Chris is correct, it's the ANGLE of the dihedral that you want to keep when you extend a wing, not the amount each tip is lifted up from level. If you keep the dihedral angle the same the extended wing will have the same amount of yaw induced roll from the dihedral even if it is a wider span. (give or take the additional drag effects). Al > > John - I added one rib to each side for the Lil' Bugger and used > the stock dihedral angle. To double check I just measured to the > first rib in from the tip instead. It flies great and I was still able to > get in at 3.5 ounces. For LB2 I'm going even wider (possibly 44") > and using a thinner, narrower chord AG 30 seiries airfoil. I hope > to have it finished to fly this weekend. > > Chris > > --- In BugHLG@y..., "John Gospodarek" <John.Gospodarek@i...> > wrote: > > Dan, > > I like the idea of the added strength so I built with the added rib > > on each side. I was going to adjust the tip height to allow for > the > > added length, but forgot. I ended up with a lower angle but I > > haven't noticed any major differences. The angle is not all that > > much different. The wing is bigger and thus turns a little wider > > (but not all that much). It may be hard to find someone who > has > > tried it both ways, and with different angles, so just give it a try > > and let us know. Good luck. > > > > > > --- In BugHLG@y..., "Dan" <danstrider@a...> wrote: > > > What is the consensus on how much dihedral to use for the > extended > > > wing? Plans call for 5 1/8" at the tip of the normal wing - are > > you > > > simply using the same angle? > > > > > > Has anyone noticed a difference in adding an extra set of > ribs > > > versus increasing the rib spacing? Besides wing strength > with the > > > extra ribs, would the airfoil be more consistent with more ribs > > > supporting the covering? > > > > > > Dan > > > > > > --- In BugHLG@y..., "John Gospodarek" < > John.Gospodarek@i...> wrote: > > > > Ya Allen You're right, that size of increase is not enough to > > need > > > > bigger feathers. I can notice that it is not quite as quick in > > the > > > > turns as the short wing but, I found the short wing was > almost > > to > > > > fast in the turns. With the bigger wing I fly much smoother. > > > > > > > > > > > > > > > > --- In BugHLG@y..., Allan Wright <aew@m...> wrote: > > > > > Ahh, then the normal tail should have worked great. My > > extended > > > wing > > > > > bug ended up at 97cm and had plenty of rudder authority. > > > > > > > > > > Al > > > > > > > > > > > > > > > > > Allen, I only added 5 in total. > > > > > > > > > > > > "I added right at five inches (the space between the 3rd > and > > > > > > 4th rib on both sides is +-2.5 inches). I made a copy of > > both > > > > wing > > > > > > sections and taped the third rib on one down over the > forth > > > rib > > > > on > > > > > > the other." > > > > > > > > > > > > I added one rib on both side and placed it at the > location > > of > > > the > > > > #4 > > > > > > rib (pushing the #4 rib out). That added the space of > aprox. > > > 2.5 > > > > in > > > > > > to each panel. That is about the same as what you > added I > > > think. > > > > five > > > > > > inches is about 12.5 cm. I left the tale and boom the > same. > > In > > > > fact I > > > > > > change the wings on the same fuse from the short to > the long > > > > > > depending on the day, wind, and lift. I used a little less > > > > dihedral > > > > > > than the plans called for by mistake. I did not have the > > wing > > > > tips > > > > > > set high enough when I glued the halfs together. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --- In BugHLG@y..., Allan Wright <aew@m...> wrote: > > > > > > > > I did it with out recalculation. I built the wing on the > > > copy > > > > of > > > > > > the > > > > > > > > plans and just installed the rod in the first and last > > > rib. > > > > Then > > > > > > I > > > > > > > > placed each rib flat on the plans and marked where > the > > rod > > > > > > crossed > > > > > > > > the rib to know the location of the hole. That way I > did > > > not > > > > > > decrease > > > > > > > > the strength of the wing with less ribs per/span. > > > > > > > > > > > > > > this is definately the right way to go if you're adding 5" > > > per > > > > > > panel. I > > > > > > > was more conservative and added about 6cm to each > panel > > with > > > > the > > > > > > same > > > > > > > ribs so I just stretched it out. I'm sure your wing has > > more > > > > area > > > > > > then > > > > > > > mind did and probably flys better. > > > > > > > > > > > > > > Did you go ahead and increase the size of the V-tails > or > > > > lengthen > > > > > > the moment > > > > > > > arm (boom) a little to help with maneuverability? My > > > extended > > > > wing > > > > > > was so > > > > > > > slight of a change I didn't bother. > > > > > > > > > > > > > > Al > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ================================================ > ===================== > > > = > > > > > > ========= > > > > > > > Allan Wright Jr. | Without love life's just a > > > long > > > > > > fight - Southside > > > > > > > University of New Hampshire +------------------------------ > > -- > > > --- > > > > ---- > > > > > > ----------- > > > > > > > Research Computing Center | WWI Modeling > mailing list: > > > > wwi@w... > > > > > > > Internet: aew@u... | WWI Modeling WWW Page: > > > > http://www.wwi- > > > > > > models.org > > > > > > > > > > > > > > > > > > > > > > ================================================ > ===================== > > > = > > > > > > ========= > > > > > > > > > > > > > > > > > > > > > > > > To unsubscribe from this group, send an email to: > > > > > > BugHLG-unsubscribe@y... > > > > > > Home Page - http://groups.yahoo.com/group/BugHLG/ > > > > > > > > > > > > > > > > > > > > > > > > Your use of Yahoo! Groups is subject to > > > > http://docs.yahoo.com/info/terms/ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ================================================ > ===================== > > > = > > > > ========= > > > > > Allan Wright Jr. | Without love life's just a long > > > > fight - Southside > > > > > University of New Hampshire +---------------------------------- > > -- > > > --- > > > > ----------- > > > > > Research Computing Center | WWI Modeling mailing > list: > > wwi@w... > > > > > Internet: aew@u... | WWI Modeling WWW Page: > > http://www.wwi- > > > > models.org > > > > > > > > > > > > > > ================================================ > ===================== > > > = > > > > ========= > > > > To unsubscribe from this group, send an email to: > BugHLG-unsubscribe@yahoogroups.com > Home Page - http://groups.yahoo.com/group/BugHLG/ > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > =============================================================================== Allan Wright Jr. | Without love life's just a long fight - Southside University of New Hampshire +-------------------------------------------------- Research Computing Center | WWI Modeling mailing list: wwi@... Internet: aew@... | WWI Modeling WWW Page: http://www.wwi-models.org ===============================================================================