Airfoil Data
MRC20-700

The MRC20-700 is a 8.4% chord-thickness airfoil with a maximum camber of 4.2% at 38% chord, suited to general-aviation and UAV wing design. At zero angle of attack the cambered geometry generates positive lift, giving an estimated zero-lift angle of -4.2°.

Thin airfoil theory predicts a stall angle near 11.8° and a peak lift-to-drag ratio around 59 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The slim profile minimises pressure drag at higher speeds but leaves limited spar depth for structural integration.

Designers evaluating the MRC20-700 typically compare it against profiles of similar thickness: HQ 3.0/11 AIRFOIL, MH 18 11.16%, E476, HQ 2.5/12 AIRFOIL, FX 74-080. The AG10 is another reference profile frequently considered alongside it.