> >Smaller wing chord's reduce Reynolds numbers, which affect the way an > >airfoil responds. To compensate, you'd need more air speed (which > >increases Reynolds number). This is part of the reason that HLG > >contest models have much lower aspect ratios than unlimited gliders, > >a high aspect ratio 1.5 meter wingspan isn't as efficient as a lower > >aspect ratio 1.5 meter winspan. > > Doesn't this have more to do with the 1.5m span limitation? Presumably, a > high aspect radio wing of a given area is more effecient then a low aspect > ratio wing of smaller span and of the same area. In the case of an HLG, > though, if you increase the AR, you have to reduce the wing area, since you > are span limited. Yes, it's related to the 1.5m span limitation, and intended flight speed of HLGs. A small wing chord and low airspeed make a wing less efficient. I do think that there's a low end limit to the rule that a higher apect ratio is always better once you get below a certain size (area) and intended airspeed. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
