Bug HLG

Guys, aren't we de-bugging the bug? Longer wing, thinner airfoil-- I think it ought to be called something like "Winged Invertebrate" or "Treehopper". Either way, this ought to be a different "bug" indeed! On Dec 6, 2011, at 9:41 AM, John Gallagher <gldrgidr@...> wrote: > The AG3X series require d-tube sheeting to get the performance out of them. That would be a neat trick for the eliptic shaped leading edge of the bug - you would have to mold it. The AG38 is very thin (7%). I believe that the AG36 (8.1%) is closer to the right thickness for a wing without LE sheeting, because of the valleys between the ribs. > > John > > ________________________________ > From: Mark Stephen <mark.stephen16@...> > To: BugHLG@yahoogroups.com > Sent: Monday, December 5, 2011 10:24 PM > Subject: [BugHLG] Re: Thanks! > > > AG38? That might not be such a bad one to try and do a comparison. Don't know just how soon I would be able to get to it, material on it's way for some other builds that are planed, but if I were to hit a stall point for whatever reason... > > Mark > > --- In BugHLG@yahoogroups.com, John Gallagher <gldrgidr@...> wrote: > > > > We are stretching the span, what we need to explore next is a thinned airfoil. I believe that the S3014 is about 9.5% thick. Today this is considerred a thick airfoil, especially for a DLG. Of course the sag between the ribs is thinner than 9.5% so the average thickness is actually less, but I still would like to try thinning the rib airfoil. It should increase launch height. The trick is to thin it enough to increase the launch height without thinning it so much that you ruin the thermalling performance. I'm thinking about 8.7%. > >  > > John > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed]

The AG3X series require d-tube sheeting to get the performance out of them.  That would be a neat trick for the eliptic shaped leading edge of the bug - you would have to mold it.  The AG38 is very thin (7%).  I believe that the AG36 (8.1%) is closer to the right thickness for a wing without LE sheeting, because of the valleys between the ribs.   John ________________________________ From: Mark Stephen <mark.stephen16@...> To: BugHLG@yahoogroups.com Sent: Monday, December 5, 2011 10:24 PM Subject: [BugHLG] Re: Thanks!   AG38? That might not be such a bad one to try and do a comparison. Don't know just how soon I would be able to get to it, material on it's way for some other builds that are planed, but if I were to hit a stall point for whatever reason... Mark --- In BugHLG@yahoogroups.com, John Gallagher <gldrgidr@...> wrote: > > We are stretching the span, what we need to explore next is a thinned airfoil.  I believe that the S3014 is about 9.5% thick.  Today this is considerred a thick airfoil, especially for a DLG.  Of course the sag between the ribs is thinner than 9.5% so the average thickness is actually less, but I still would like to try thinning the rib airfoil.  It should increase launch height.  The trick is to thin it enough to increase the launch height without thinning it so much that you ruin the thermalling performance.  I'm thinking about 8.7%. >   > John [Non-text portions of this message have been removed]

Sent via BlackBerry by AT&T -----Original Message----- From: "Mark Stephen" <mark.stephen16@...> Sender: BugHLG@yahoogroups.com Date: Tue, 06 Dec 2011 03:24:49 To: <BugHLG@yahoogroups.com> Reply-To: BugHLG@yahoogroups.com Subject: [BugHLG] Re: Thanks! AG38? That might not be such a bad one to try and do a comparison. Don't know just how soon I would be able to get to it, material on it's way for some other builds that are planed, but if I were to hit a stall point for whatever reason... Mark --- In BugHLG@yahoogroups.com, John Gallagher <gldrgidr@...> wrote: > > We are stretching the span, what we need to explore next is a thinned airfoil.  I believe that the S3014 is about 9.5% thick.  Today this is considerred a thick airfoil, especially for a DLG.  Of course the sag between the ribs is thinner than 9.5% so the average thickness is actually less, but I still would like to try thinning the rib airfoil.  It should increase launch height.  The trick is to thin it enough to increase the launch height without thinning it so much that you ruin the thermalling performance.  I'm thinking about 8.7%. >   > John [Non-text portions of this message have been removed]

AG38? That might not be such a bad one to try and do a comparison. Don't know just how soon I would be able to get to it, material on it's way for some other builds that are planed, but if I were to hit a stall point for whatever reason... Mark --- In BugHLG@yahoogroups.com, John Gallagher <gldrgidr@...> wrote: > > We are stretching the span, what we need to explore next is a thinned airfoil.  I believe that the S3014 is about 9.5% thick.  Today this is considerred a thick airfoil, especially for a DLG.  Of course the sag between the ribs is thinner than 9.5% so the average thickness is actually less, but I still would like to try thinning the rib airfoil.  It should increase launch height.  The trick is to thin it enough to increase the launch height without thinning it so much that you ruin the thermalling performance.  I'm thinking about 8.7%. >   > John

We are stretching the span, what we need to explore next is a thinned airfoil.  I believe that the S3014 is about 9.5% thick.  Today this is considerred a thick airfoil, especially for a DLG.  Of course the sag between the ribs is thinner than 9.5% so the average thickness is actually less, but I still would like to try thinning the rib airfoil.  It should increase launch height.  The trick is to thin it enough to increase the launch height without thinning it so much that you ruin the thermalling performance.  I'm thinking about 8.7%.   John ________________________________ From: Mark Stephen <mark.stephen16@...> To: BugHLG@yahoogroups.com Sent: Monday, December 5, 2011 10:25 AM Subject: [BugHLG] Re: Thanks!   For my small part in that list, your welcome, same to mpwlad. Next up is a stretched wing, and I do mean stretched. Took the CAD drawing, stretched the panel to 20" and set up false ribs for the widened bays. I would of had this done says ago but life got in the way. If everything works out right, I'll post the hows and whats about it all. Mark --- In BugHLG@yahoogroups.com, "mpwlad" <mpwlad@...> wrote: > > Thanks for the torsion spring tutorial, aft peg placement notes and photos, words on electronics and weight reduction and optimal use of reinforcement instead of ballast extending the fuse slightly, etc by many posters in this group in several message threads! > [Non-text portions of this message have been removed]

For my small part in that list, your welcome, same to mpwlad. Next up is a stretched wing, and I do mean stretched. Took the CAD drawing, stretched the panel to 20" and set up false ribs for the widened bays. I would of had this done says ago but life got in the way. If everything works out right, I'll post the hows and whats about it all. Mark --- In BugHLG@yahoogroups.com, "mpwlad" <mpwlad@...> wrote: > > Thanks for the torsion spring tutorial, aft peg placement notes and photos, words on electronics and weight reduction and optimal use of reinforcement instead of ballast extending the fuse slightly, etc by many posters in this group in several message threads! >

Thanks for the torsion spring tutorial, aft peg placement notes and photos, words on electronics and weight reduction and optimal use of reinforcement instead of ballast extending the fuse slightly, etc by many posters in this group in several message threads!