Alasdair Ryan Posted January 13, 2013 Posted January 13, 2013 i think it's quite important having the plastic around it tightly firmed....it will give more strenght to the frame and will generate a better portance I think you might need to put some sort of beam underneath to support the plastic from getting pushed up,although it the plastic is tight then maybe not.
piterx Posted January 13, 2013 Posted January 13, 2013 maybe not!....have a look at this video... maybe we could make the wings like these probably it's enough that the frame is "sealed" inside of the wings so there's not gonna be much turbolence
Lipko Posted January 13, 2013 Posted January 13, 2013 Um, aren't the whole thing is about Lego? I mean if an essential part of the model is not Lego (the surface of the wings), then the whole thing becomes pointless. You could make your own Foam-cut wings and stick them on some Lego body and call it flying Lego.
DLuders Posted January 13, 2013 Posted January 13, 2013 @ Lipko: C'mon, give me a break! This self-imposed adherence to 100% Lego parts is silly. Use one of the "official LEGO" yellow store bags if it MUST be 100% Lego. Plastic is plastic -- who cares?
piterx Posted January 13, 2013 Posted January 13, 2013 yeah cmon guys! we're not talking about using different motors...or pieces....it's just using a piece of plastic in the same way everyone uses rubber bands :P
piterx Posted January 13, 2013 Posted January 13, 2013 you know what? before of everything, you should try putting your propeller on a chassis with wheels and all the power functions pieces to see if it can reach a reasonable speed ...if it's so then you can worry about how to build the delta wing :D
Zerobricks Posted January 13, 2013 Author Posted January 13, 2013 you know what? before of everything, you should try putting your propeller on a chassis with wheels and all the power functions pieces to see if it can reach a reasonable speed ...if it's so then you can worry about how to build the delta wing :D Will do :)
Alasdair Ryan Posted January 13, 2013 Posted January 13, 2013 Would it help to make the wheels powered to help it get airborne?
piterx Posted January 13, 2013 Posted January 13, 2013 yeah but make it quickly :D i can't wait to see it lol !!! Would it help to make the wheels powered to help it get airborne? hmmm i don't think so...it will only cause adding weight to the model....dunno, maybe it's a good idea maybe not :P
AVCampos Posted January 13, 2013 Posted January 13, 2013 Would it help to make the wheels powered to help it get airborne? I think the increase in ground speed wouldn't compensate for the increased complexity, weight and geartrain friction when flying.
piterx Posted January 13, 2013 Posted January 13, 2013 i've found something interesting :P http://www.dimensionsinfo.com/dimensions-of-a-hang-glider/
Tamas Juhasz Posted January 13, 2013 Posted January 13, 2013 (edited) Sounds interesting, but something is hard to solve: if we can make a flying plane with buggy or another motor and sealed wings, how can we control that? The PF receiver's range isn't enough in outdoor. Or do you think about a non controlled(just flying until reaches ground or something) plane? So, if we think about a controlled vehicle, imho helicpoters are better(I know, nearly impossible to make with Lego without wires - but a wired one is half success). Edited January 13, 2013 by Mbmc
Alasdair Ryan Posted January 13, 2013 Posted January 13, 2013 I think the increase in ground speed wouldn't compensate for the increased complexity, weight and geartrain friction when flying. could yo not do a chain drive to the other out put of the buggy motor? Sounds interesting, but something is hard to solve: if we can make a flying plane with buggy or another motor and sealed wings, how can we control that? This might be quite a big issue.
piterx Posted January 13, 2013 Posted January 13, 2013 well probably we're gonna need to run after the thing XD
Bob De Quatre Posted January 13, 2013 Posted January 13, 2013 Why not add a "side" propeller, perpendicular to the body of the plane. Something like the tail rotor of an helicopter.
Alasdair Ryan Posted January 13, 2013 Posted January 13, 2013 Why not add a "side" propeller, perpendicular to the body of the plane. Something like the tail rotor of an helicopter. I can't see that working,what about a micro motor for a tail rudder?
piterx Posted January 13, 2013 Posted January 13, 2013 ehm...why? :D it's enough havin two m motors with a worm gear to control the 4 directions of the wing :P
DLuders Posted January 13, 2013 Posted January 13, 2013 (edited) @ Zblj: Recall Itchy4000's Lego Technic Osprey aircraft ( ) -- perhaps your Lego powered Hang Glider could go 'round and 'round on a circular path (WITHOUT a counterweight), and then go airborne. The string tether would then go "slack" to prove that it can generate continuous lift for sustained flight. The tether would keep the aircraft within range of your Power Functions infrared signals.... Edited January 13, 2013 by DLuders
piterx Posted January 13, 2013 Posted January 13, 2013 to me that's not a problem that big....i mean, it would be enough running after the glider....zblj is not supposed to make it fly high right :P? if it flyes even at a height of 1 meter that will be great anyway lol
SkyrateShadowStorm Posted January 13, 2013 Posted January 13, 2013 Wow, this topic has really expanded in just a few hours. My thoughts on the non-Lego material glider wings is that I think they ultimately should be made from LEGOs, likely plates. However for testing I think it is fine to be non LEGO, with further engineering to switch to plates later on. If you are going to use non-Lego material for the wings I would suggest some sort of Tape, like packing, scotch, electrical, or perhaps plumbers/teflon tape. I'm not suggesting Duct/Duck tape because I think it may be too heavy for starters, though perhaps the most hardy. Why exactly did we switch to powered gliders, though? We think it will be easier to get a single, smaller, propeller to spin fast enough and pull the machine? That may be possible with light gearing of one or two 5292 motors. We'll also need a small but sturdy technic axle mounted propeller. Is there a factory one or does it need to be designed? @Piterx, I like your drawing. That framework also allows the addition of flaps to control height and help with landing. The biggest problem I see with a powered glider/plane is it flying beyond PF receiver/NXT range. This of course will depend on what speed we actually need for flight. We may find we can fly fairly slow being so small, or we may need to fly fast. Regarding the questions about controlling the craft, You would need one motor to control the main wing flaps(up/down) and one motor to control the tail flaps(left right). As well as of course your main drive engine motor which would likely be 1 or 2 5292 buggy motor. That puts our weight at around 218.4 grams(M Motor x2, Battery box x1, 5292 x1, Receiver x2), or 275.1 grams(M Motor x2, Battery box x1, 5292 x2, Receiver x2) for the motor system. That's not counting batteries though. I definitely think it would be good to get the propeller and engine system running high before bothering with the wings. That's not to say we shouldn't still discuss the wings here though.
piterx Posted January 14, 2013 Posted January 14, 2013 (edited) yeah it would be great having radio control... anyway i don't think the glider is gonna go that fast :P and with a big wing it's gonna be able to carry more weight... but: if the glider works the next step is gonna be an airplane :D cmon this is possible :P Edited January 14, 2013 by piterx
Zerobricks Posted January 14, 2013 Author Posted January 14, 2013 Wow so many ideas. Gonna slowly start with some speed measurments. The running arround with string idea is really good!
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