GliderIreland - Ireland RC Forum - Flying Model forum in Ireland
Gliders => Slope Soaring => Topic started by: Fred on June 02, 2009, 12:50:23 PM
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So, after the week end, we had a bit of a chat on the car park about a wood sloper...
Was already working on one for a little while (on the pile of projects!).
So, here is the "3 views" of the model, and I'll try to keep the design/developments on the forum, like that, you will see almost the entire designing process, and that can give some ideas ! :D
So, if you have any changes or features you want to see, just let me know here!
Wing Span is 2500mm
Lenght is 1340mm approx
All wood!
Removable cone for access to ballast and radio
Profile... Still working on it, have a few options
Full house glider
V tail
And I think we already have 2 beta builders! :D
(http://www.gliderireland.net/forum/images/uploads/Fred/F3WOOD.jpg)
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Wing Span is 2500mm
Lenght is 1340mm approx
All wood!
Hi Fred,
if you don't mind, I 'll replicate it in Depron (with some carbon bits).
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Hi Dennis,
Built in depron, you will definitively have some rigidity issues, and the thin profile will not really help, as with a 3mm depron sheeting, you don't have a lot left for the spars (you will need a structured spar in carbone tubes) and the servos for the flaps/ailerons.
Fuselage in 6 mm depron with wood "corners" should be ok though.
But why not ! :D Can be tried !
(http://www.gliderireland.net/forum/images/uploads/Fred/depron.jpg)
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(http://www.gliderireland.net/forum/images/uploads/Fred/depron.jpg)
What is the name of this profile ?
I'll be using Profili to print ribs in the right scale.
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Great project!
We might see a bunch of these if they build easy and fly well!
Foam or built-up wing??
Maybe for a name you could use the name of a tree?? as it is a woody??
Spruce, Ash, Alder, Fir, Elm, Hawthorn etc..
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Dennis, I will give you all that once finished. :D
Hey Joe, I give it a try anyway, was in my head for a while now, that need to be done!
Will go for a bigger one after that I think, something like 3.2m...
All wood, ribs etc, but why not wood fuselage, and sheeted wings, everything is possible. I'l do the templates for the wings, for those who don't have a cutting machine :P
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Just to compare...
3.10m against 2.5m...
Root chord goes from 20cm to 26cm...
I like them big! :P
(http://www.gliderireland.net/forum/images/uploads/Fred/320cm.jpg)
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Well, I can understand you liking them big Fred, after all you're not exactly a "little" fellow yourself , are you :lol:
But to be serious for a moment, (for a moment is about as long as I can be serious for :) ) I think this is a very interesting project. I've spent ages searching the net for my birthday present and I can't find any company supplying what I want :!:
As I said to you at the car park Fred, what I would be very happy to buy is a model with say,..... 2.5mtr span, good penetration, full house wing, reasonably acrobatic, and of wooden construction.
From experience I've found wooden covered foam wings are very strong, (they must be to withstand my crashings) and a "box" section fuse is both easy to build and to repair.
I notice in your drawings you're thinking of a V tail. Personaly I'd like to be able to do Stall Turns, is that poss with a V tail??? :?: I also wonder how well a removable nose cone would protect the battery and servos in the event of one of my ,.......... :?: mmm, how can I put this delicately, "Unconventional Landings" :oops:
As for the wing profile, I don't understand enough of these matters yet, (may be I'm too young) but one with large control surfaces would be best I think?
So,.....I shall be watching this thread with great interest and anticipation :D Carry on the good work Fred!
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Hi Keith, thanks :D
For the V tail, yes of course, you can use the rudder (and that's mandatory even! :P ) and the glider will be designed like that, with 2 servos in the front for the V tail, everything else in the wings !
Best way not to harm the nose, is not to crash ! :P There will be a plywood frame at the front, so that should be pretty solid, but we can always change that, remove the cone, and do a opening on the top for radio/ballast access instead... :?:
For the control surface size, you must respect a certain ratio, depending of the wing profile used. Here it is about 22% of chord.
This is not a 3D type machine, more for speed runs and dynamic (why not thermals as well.. full house wing!)
My main aim on the design, is that I want it to be able to fit in a small bag! Wings in 4 parts, removable tail, and the longest bit will be the fuselage. I want a machine that I can carry/bring anywahere with me!
So, what size ? 2.5m or 3.2m ? :?: Tempted by the big one, but we can always go for both and compare...
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Okay Fred, I suspected there would be some basic laws to dictate the size of the control surfaces.
Like the idea of a 4 part wing, I've only got a little car :lol:
You and I could spend the next thousand years debating the merits of thermal flying vis slope soaring. As I said to Alan a few weeks ago, it's a case of Horses for Courses (But high wind slope soaring is the best :P )
As for size :?: well,.........my other 'arf recons that what matters isn't the size of the ship,..... but the motion of the ocean! :lol: Surely the smaller of the two would be more agile in the air? (And that takes my vote)
As for names for this little beauty, why don't you go classical...Aphrodite :D A Greek goddess with the most beautiful body. (Also the goddess of love and lust.)(Not that that influenced my suggestion :oops:)
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How much dihedral are you thinking of using on this bird Fred?
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Ah women... Always the good words to keep us happy ! :P :P
For the dihedral, first plan was 0 degrees for the middle section, 2 degrees for the panels, and 40 degrees for the winglet...
Now, I have to compute all that, but I would like to try 0.5, 1.5 and 40 degrees, to have some sort of elliptic dihedral...
Just to see the effects...
But anyway, I keep in mind that this is not a fully molded wing, so effects in a computer, will be totally different on the reality due to the building method...
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That's exactly the sort of glider I had in mind Fred - I'd be up for the 2.5 m version - how about a three-piece wing with flat central section?
Great day last Saturday - that one will last in the memory for a while! Good to see everyone there.
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Hi Peter,
Always good to see people at the slope, especially on a day like the one we had ! Perfect! :D
For the central panel, I had plan to have it in 2 parts with wing joiners as this is solid (plywood frame...) and easy to setup (+ that gives you a bit of room in the center section of the fuselage).
But, can be done in one piece, bolted on the fuselage.
I'll change the plan so :D
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' GREEN MACHINE '
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:lol:
Well, you still have to kill trees ! :?:
But can always be recycle to light a BBQ in case of serious crash! :D
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Looks like an interesting project Fred. I'll be keeping my eye on it.
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Another question for you Fred.
Are you seeing this plane with a high wing or shoulder wing? (Mid wing) :?:
K.
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Keith,
Drawing in post 1.
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Well Fred, I've cleared my work bench, fitted a new No.11 blade in my knife holder, sharpened my pencil, and I'm ready to start building :D
Only problem,...........I haven't got the kit yet :!:
When can I expect to get my hands on this little beauty :D There's nothing else like it in the market place, you'll sell gallons of them! (Just think of all the money you'll make 8) And all you've got to do....... is produce it.)
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Oh boy !
Well, it's going to take time! All my projects are now stopped as Retroplane is approaching fast, and with the kids, I can't really do much for the time being.
So, working slowly on it (but I managed to have a new design out last week :D :D Full story soon! )
So, all will be resumed after Retroplane.
Patience young Padawan! :P
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Ok, update, just for Keith ! :P
Work in progress, almost done. Changed the fuselage design to use plywood, and all the parts should fit together like a jigsaw puzzle... Well, that's the plan anyway !
Wings ribs are all done, just need to work on the ailerons / flaps now. Anyway, should be done by the end of the month, for a good winter project !
Working on 2 versions at the same time.. 2.5m and 3.2m :D
Plywood will be the main material.
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Okay Fred, your last update on this “Super Dooper Soarer” ( Translation = Fansastic Slope Glider ) was nearly a month ago. :(
(Actually, that could be it’s name…..The SDS…or… FSG…….Cool! 8) )
I’m eager to get started, so what’s the “Low Down?” (Translation = latest information?)
I’ll have a 2.5mtr version please, with the two part wing.
Will you be supplying all the parts, will it be a short kit, or is it a ‘plan only and you scrounge all the parts from where ever you can’ type construction? :!:
If I could start building by next week that would be “Positively Spiffing.” (Translation = Marvellous ) :D
Love & kisses
Keith
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Salut Keith :D
Well... I can give you the plan for a beta build if you want next time I see you. But for the kit, you will have to wait a bit as we will order the prototypes next time we do an order for the shop kits. Should be soon.
Up to you, you can have the plan now, or the proto/kit and plan later. Can be moved to a winter build, all shiny for the new season ! :P
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Fred Said;
Can be moved to a winter build, all shiny for the new season !
No,no,no,.......for me the new season starts now! :D Wind! my dear Chap, lots of WIND! :clap:
But if it's not ready I guess I'll have to wait until the kit is available :cry:
BTW is it a full kit?
I've been casting my eye over some VTPR models: Mudslides, Kulbutins, Voltij's, mini Toons, La Fish, Wasabi's and others. Hmmmmm, they do look FUN :?:
Right then my friend, I will await your advise as to when this new model from the "Marie" Hanger is available. (What are you going to call this masterpiece?)
Don't forget me Mon Ami,
Merci Beaucoup,
Keith
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:lol: Well yes, actually, big winds should be back soon !
31kph planned for Saturday (West) :D
Anyway, sorry Keith, a bit slow on that one... :( For the kit, no details yet, as I still don't know in fact :P But you will be the first one to know what is going on.
Je ne t'oublierai pas !
Frédéric
:P