Constant chord wings you mean? Taper will cause the biggest decrease in induced drag (for a given wing weight) and if you limit it to around 0.7, you probably can avoid twist and other complexities.Just wondering what the current theories are for wing tip design for light aircraft? Specifically those with constant wings.
That depends on a lot of things, but taper is by far the most effective way to decrease induced drag. If you can't be bothered with that since you're mainly interested in cruise, use a straight wingYes I meant constant Chord wings. Taper doesnt seem to offer any real gain that is worth the added complexity for my very basic design.
A slightly rounded tip, with roughly the radius of half your spar depth at the tip will help prevent separation and thus reduce drag a bit. Simply rotate around the chord line and it's fine. Fairly easy to make with a bit of foam and sanding and it gives you a nice "bumper" when you're hitting something, plus a good mounting location for lights.So if I understand Orion correctly I can simply end my wing with a squared off tip and not be losing any measurable amount of performance?
Which type of structure? In metal it makes sense to stay constant chord, in composites not so much.The design I'm starting on is meant to be simple and quick to build, so a lot of features are not optimized for the sake of simplicity. eg the fuselage is squared off, wings are constant chord etc. The intention is to gain back some of the slight losses with a lower weight that will result from the simple structure.