For those who don't know yet: Simpleplanes calculates the lift of a wing regardless if it is/should be exposed to the airstream or not. So a wing burried inside a fuselage still gives lift. So does a wing buried within another wing.

While that enables you to use a standard wing and then build a realistic 'fuselage' wing around it, if you want a realistic STOL system, it kind of <bleep>s because most flaps systems nowadays work by hiding extra lift surfaces inside the wing and then extending them on landing approach. Simpleplanes won't let you do this.... Or rather your extendable flaps generate lift regardless whether they are extended or not, which kind-of defeats the purpose....

So what to do?

Of course you can always use regular flaps, basically big ailerons with the input set to VTOL instead of Roll, 90% of the builders here use this and for 90% of the time this works good enough, but what if you really want like get your landing speed down to 1/3 of your regular cruising speed?

I have experimented with extra wings that fold out, extra wings that fold back, even extra wings that fold up. But the results seem kind-of..... mixed..... Yes, it lowers your stall speed, but with the added weight and drag, a simple regular flap could do almost just as well. It took me two days of tinkering with a testbed airframe to get the takeoff speed down from 100mph to 50 mph... All the while just using really big flaps got the speed down to 70 mph

Are there any other builders out there that tried something likewise? If so, what did you do/try? How did it work out? Do you have any planes uploaded that I can look at?

Like to read about all your experiences.