| Cases | Cl | Cd | l/d | Drag change |
| Baseline airfoil | 0.8868 | 0.0466 | 19.03 | - |
| airfoil with cavity - 1 | 0.8667 | 0.0456 | 19.00 | −2.14% |
| airfoil with cavity - 2 | 0.8675 | 0.0453 | 19.15 | −2.78% |
| airfoil with cavity - 3 | 0.8953 | 0.0476 | 18.80 | + 2.14 % |