/diy/ - Do It Yourself

>>1376061
>>1375751
>>1370053
>>1369573
>>1368918
Oh, also, for slow small models, and if you want a long flight time then "slow" is going to be one of your parameters because increased drag at higher airspeeds, you will have some difficulty in finding airfoil performance at small/slow speeds. There are some papers from that guy at UIUC that cover "low Reynolds numbers" airfoils specifically for efficient drones.

Take a look at this one for funsies:

http://airfoiltools.com/airfoil/details?airfoil=s1223rtl-il

The S1223 was one of the more efficient high-lift airfoils at low speeds, and the RTL mod is supposed to be an improvement. If I can find the papers and can be arsed to come back, I'll post the DOIs for you.

It's really fucking sad how useless /diy/ is. This ought to be a useful resource, but all the twelve-year-olds trying to pretend that they're knowledgeable just drags the place down into the dirt.