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Go-to airfoils for docile stall behavior

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cluttonfred

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OK, airfoil choice is a big and sometimes contentious topic, so here's a simple question and let's try for some simple answers.

Let's assume typical single- and two-seat light aircraft gross weights (300-600 kg, ~660-1320 lb), wing loadings (30-50 kg/m2, 6-10 lb/sq ft) and aspect ratios (~4 for a racer up to 8 or 9 for a fast cruiser).

Let's also assume a constant-chord wing without twist, just a simple, plain, easy-to-build rectangular wing. That type of wing should already stall from the root, so using an airfoil with gentle, not sharp, stall characteristics should help assure safe handling.

Let's also set aside any laminar flow airfoils overly sensitive to roughness--I don't want handling changed by a proud rivet or some smashed bugs.

So what are some go-to airfoils that don't require twist, slots, slats, vortex generators or anything else for docile stall behavior?

It might be nice to identify various options in the 10-18% thickness range to allow for different applications and building methods.

Cheers,

Matthew
 
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