Why? Because the ability to flare the wing in a post stall maneuver of this sort means the CG is far too far back and the plane would not meet full sized stability requirements. But with models the reduced size of the canard really works against us.Īnd while I'd like to see a lower CL canard design pulling a Concorde like flare at landing it likely won't be happening any time soon. That may work on some full size canards where the Reynolds numbers will support the canard reaching some mega high lift coefficients. If you are not locked into the 480 by some sort of event rules you'd be much better off to ditch it and buy one of the various inexpensive brushless motors and ESC combos in the 80 to 100 watt rated range to replace it. The old 480 brush motors did not have a lot of excess power to play with. if you're stuck with the motor then your best option is to make a big old timer built up stick and light covering style of model with a fat'ish fuselage that allows you maximum flexibility to carry a camera or other small lightweight package. With that in mind you can finally pick the motor you want. Only when that part is all done do you estimate the plane's weight, add the payload and RC gear and battery pack and approximate motor and then determine what level of performance you want to set the watts per lb of overall weight. Once you set this you can begin on the plane design. If you have a payload in mind you need to identify that load and then set the other factors be it to carry that payload at a fast cruise (keep in mind that a fast cruise for models that must remain in sight to be controllable is perhaps 30 mph) or a slow cruise. You've picked a motor and asked about a plane for it but the info on the load you want to carry be it a camera or whatever is zilch. Clark Y is certainly one of the best choices for the wing section, perhaps thinned to 9%. One important criterion is the wing loading with a model of this size and to keep the landing simple I would aim for WL of around 50 gr/dm^2 (~17 oz/sqft). ![]() ![]() If your fuselage permits you could also go for a canard lay-out – it’s more a matter of taste (fashion) than technical merit. Since the drive is already tuned for high speed, then there is in my view the faster solution the better one. Should I go for a high lift high drag wing and keep the speed low or use a lower drag wing so that I can fly faster? Which one will give me more lift in the end?Īs usual you have to make a compromise: would you rather go faster with a lesser load, or carry more load and fly slower. I am wondering what kind of airfoil shapes I could use for this. My design criteria is to have the plane lift as much as possible and be able to travel quite quickly. I'm trying to build my own scratch built plane and am wondering what kind of airfoil shapes to use.
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